@article{2019PASJ...71...71H,

title = {Big Three Dragons: A z = 7.15 Lyman-break galaxy detected in [O III] 88 ensuremathmum, [C II] 158 ensuremathmum, and dust continuum with ALMA},

author = {Takuya {Hashimoto} and Akio K {Inoue} and Ken {Mawatari} and Yoichi {Tamura} and Hiroshi {Matsuo} and Hisanori {Furusawa} and Yuichi {Harikane} and Takatoshi {Shibuya} and Kirsten K {Knudsen} and Kotaro {Kohno} and Yoshiaki {Ono} and Erik {Zackrisson} and Takashi {Okamoto} and Nobunari {Kashikawa} and Pascal A {Oesch} and Masami {Ouchi} and Kazuaki {Ota} and Ikkoh {Shimizu} and Yoshiaki {Taniguchi} and Hideki {Umehata} and Darach {Watson}},

url = {https://ui.adsabs.harvard.edu/abs/2019PASJ...71...71H/abstract},

doi = {10.1093/pasj/psz049},

year  = {2019},

date = {2019-01-01},

journal = {Publications of the ASJ},

volume = {71},

number = {4},

pages = {71},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2019MNRAS.487..409S,

title = {Slowing down of cosmic growth of supermassive black holes: theoretical prediction of the Eddington ratio distribution},

author = {Hikari {Shirakata} and Toshihiro {Kawaguchi} and Taira {Oogi} and Takashi {Okamoto} and Masahiro {Nagashima}},

url = {https://ui.adsabs.harvard.edu/abs/2019MNRAS.487..409S/abstract},

doi = {10.1093/mnras/stz1282},

year  = {2019},

date = {2019-01-01},

journal = {Monthly Notices of the RAS},

volume = {487},

number = {1},

pages = {409-419},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2019PASJ...71..111I,

title = {Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). VIII. A less biased view of the early co-evolution of black holes and host galaxies},

author = {Takuma {Izumi} and Masafusa {Onoue} and Yoshiki {Matsuoka} and Tohru {Nagao} and Michael A {Strauss} and Masatoshi {Imanishi} and Nobunari {Kashikawa} and Seiji {Fujimoto} and Kotaro {Kohno} and Yoshiki {Toba} and Hideki {Umehata} and Tomotsugu {Goto} and Yoshihiro {Ueda} and Hikari {Shirakata} and John D {Silverman} and Jenny E {Greene} and Yuichi {Harikane} and Yasuhiro {Hashimoto} and Soh {Ikarashi} and Daisuke {Iono} and Kazushi {Iwasawa} and Chien-Hsiu {Lee} and Takeo {Minezaki} and Kouichiro {Nakanishi} and Yoichi {Tamura} and Ji-Jia {Tang} and Akio {Taniguchi}},

doi = {10.1093/pasj/psz096},

year  = {2019},

date = {2019-01-01},

journal = {Publications of the ASJ},

volume = {71},

number = {6},

pages = {111},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2019ApJ...872L...2Mb,

title = {Discovery of the First Low-luminosity Quasar at z > 7},

author = {Yoshiki {Matsuoka} and Masafusa {Onoue} and Nobunari {Kashikawa} and Michael A {Strauss} and Kazushi {Iwasawa} and Chien-Hsiu {Lee} and Masatoshi {Imanishi} and Tohru {Nagao} and Masayuki {Akiyama} and Naoko {Asami} and James {Bosch} and Hisanori {Furusawa} and Tomotsugu {Goto} and James E {Gunn} and Yuichi {Harikane} and Hiroyuki {Ikeda} and Takuma {Izumi} and Toshihiro {Kawaguchi} and Nanako {Kato} and Satoshi {Kikuta} and Kotaro {Kohno} and Yutaka {Komiyama} and Shuhei {Koyama} and Robert H {Lupton} and Takeo {Minezaki} and Satoshi {Miyazaki} and Hitoshi {Murayama} and Mana {Niida} and Atsushi J {Nishizawa} and Akatoki {Noboriguchi} and Masamune {Oguri} and Yoshiaki {Ono} and Masami {Ouchi} and Paul A {Price} and Hiroaki {Sameshima} and Andreas {Schulze} and Hikari {Shirakata} and John D {Silverman} and Naoshi {Sugiyama} and Philip J {Tait} and Masahiro {Takada} and Tadafumi {Takata} and Masayuki {Tanaka} and Ji-Jia {Tang} and Yoshiki {Toba} and Yousuke {Utsumi} and Shiang-Yu {Wang} and Takuji {Yamashita}},

doi = {10.3847/2041-8213/ab0216},

year  = {2019},

date = {2019-01-01},

journal = {Astrophysical Journal, Letters},

volume = {872},

number = {1},

pages = {L2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...869..150Mb,

title = {Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6},

author = {Yoshiki {Matsuoka} and Michael A {Strauss} and Nobunari {Kashikawa} and Masafusa {Onoue} and Kazushi {Iwasawa} and Ji-Jia {Tang} and Chien-Hsiu {Lee} and Masatoshi {Imanishi} and Tohru {Nagao} and Masayuki {Akiyama} and Naoko {Asami} and James {Bosch} and Hisanori {Furusawa} and Tomotsugu {Goto} and James E {Gunn} and Yuichi {Harikane} and Hiroyuki {Ikeda} and Takuma {Izumi} and Toshihiro {Kawaguchi} and Nanako {Kato} and Satoshi {Kikuta} and Kotaro {Kohno} and Yutaka {Komiyama} and Robert H {Lupton} and Takeo {Minezaki} and Satoshi {Miyazaki} and Hitoshi {Murayama} and Mana {Niida} and Atsushi J {Nishizawa} and Akatoki {Noboriguchi} and Masamune {Oguri} and Yoshiaki {Ono} and Masami {Ouchi} and Paul A {Price} and Hiroaki {Sameshima} and Andreas {Schulze} and Hikari {Shirakata} and John D {Silverman} and Naoshi {Sugiyama} and Philip J {Tait} and Masahiro {Takada} and Tadafumi {Takata} and Masayuki {Tanaka} and Yoshiki {Toba} and Yousuke {Utsumi} and Shiang-Yu {Wang} and Takuji {Yamashita}},

doi = {10.3847/1538-4357/aaee7a},

year  = {2018},

date = {2018-12-01},

journal = {Astrophysical Journal},

volume = {869},

number = {2},

pages = {150},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Dobbs18,

title = {Simulations of the flocculent spiral M33: what drives the spiral structure?},

author = {Clare Dobbs and Alex Pettitt and Edvige Corbelli and Jim Pringle},

url = {http://adsabs.harvard.edu/abs/2018arXiv180504443D},

year  = {2018},

date = {2018-06-01},

journal = {MNRAS},

abstract = {We perform simulations of isolated galaxies in order to investigate the likely origin of the spiral structure in M33. In our models, we find that gravitational instabilities in the stars and gas are able to reproduce the observed spiral pattern and velocity field of M33, as seen in HI, and no interaction is required. We also find that the optimum models have high levels of stellar feedback which create large holes similar to those observed in M33, whilst lower levels of feedback tend to produce a large amount of small scale structure, and undisturbed long filaments of high surface density gas, hardly detected in the M33 disc. The gas component appears to have a significant role in producing the structure, so if there is little feedback, both the gas and stars organise into clear spiral arms, likely due to a lower combined $Q$ (using gas and stars), and the ready ability of cold gas to undergo spiral shocks. By contrast models with higher feedback have weaker spiral structure, especially in the stellar component, compared to grand design galaxies. We did not see a large difference in the behaviour of $Q_{stars}$ with most of these models, however, because $Q_{stars}$ stayed relatively constant unless the disc was more strongly unstable. Our models suggest that although the stars produce some underlying spiral structure, this is relatively weak, and the gas physics has a considerable role in producing the large scale structure of the ISM in flocculent spirals.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nguyen18,

title = {The impact of galactic disc environment on star-forming clouds},

author = {Ngan Nguyen and Alex Pettitt and Elizabeth Tasker and Takashi Okamoto},

url = {http://adsabs.harvard.edu/abs/2018MNRAS.475...27N},

doi = {10.1093/mnras/stx3143},

year  = {2018},

date = {2018-03-01},

journal = {MNRAS},

volume = {475},

number = {1},

pages = {27},

abstract = {We explore the effect of different galactic disc environments on the properties of star-forming clouds through variations in the background potential in a set of isolated galaxy simulations. Rising, falling, and flat rotation curves expected in halo-dominated, disc-dominated, and Milky Way-like galaxies were considered, with and without an additional two-arm spiral potential. The evolution of each disc displayed notable variations that are attributed to different regimes of stability, determined by shear and gravitational collapse. The properties of a typical cloud were largely unaffected by the changes in rotation curve, but the production of small and large cloud associations was strongly dependent on this environment. This suggests that while differing rotation curves can influence where clouds are initially formed, the average bulk properties are effectively independent of the global environment. The addition of a spiral perturbation made the greatest difference to cloud properties, successfully sweeping the gas into larger, seemingly unbound, extended structures and creating large arm-interarm contrasts.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pettitt18,

title = {Bars and spirals in tidal interactions with an ensemble of galaxy mass models},

author = {Alex Pettitt and James Wadsley},

url = {http://adsabs.harvard.edu/abs/2018MNRAS.474.5645P},

doi = {10.1093/mnras/stx3129},

year  = {2018},

date = {2018-03-01},

journal = {MNRAS},

volume = {474},

number = {4},

pages = {5645},

abstract = {We present simulations of the gaseous and stellar material in several different galaxy mass models under the influence of different tidal fly-bys to assess the changes in their bar and spiral morphology. Five different mass models are chosen to represent the variety of rotation curves seen in nature. We find a multitude of different spiral and bar structures can be created, with their properties dependent on the strength of the interaction. We calculate pattern speeds, spiral wind-up rates, bar lengths, and angular momentum exchange to quantify the changes in disc morphology in each scenario. The wind-up rates of the tidal spirals follow the 2:1 resonance very closely for the flat and dark matter-dominated rotation curves, whereas the more baryon-dominated curves tend to wind-up faster, influenced by their inner bars. Clear spurs are seen in most of the tidal spirals, most noticeable in the flat rotation curve models. Bars formed both in isolation and interactions agree well with those seen in real galaxies, with a mixture of `fast' and `slow' rotators. We find no strong correlation between bar length or pattern speed and the interaction strength. Bar formation is, however, accelerated/induced in four out of five of our models. We close by briefly comparing the morphology of our models to real galaxies, easily finding analogues for nearly all simulations presenter here, showing passages of small companions can easily reproduce an ensemble of observed morphologies.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018MNRAS.474.1935I,

title = {The effect of radiation pressure on spatial distribution of dust inside H II regions},

author = {Shohei Ishiki and Takashi Okamoto and Akio K Inoue},

url = {http://adsabs.harvard.edu/abs/2018MNRAS.474.1935I},

doi = {10.1093/mnras/stx2833},

year  = {2018},

date = {2018-01-01},

journal = {Monthly Notices of the RAS},

volume = {474},

pages = {1935-1943},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70S..35M,

title = {Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). II. Discovery of 32 quasars and luminous galaxies at 5.7 < z < 6.8},

author = {Y Matsuoka and M Onoue and N Kashikawa and K Iwasawa and M A Strauss and T Nagao and M Imanishi and C -H Lee and M Akiyama and N Asami and J Bosch and S Foucaud and H Furusawa and T Goto and J E Gunn and Y Harikane and H Ikeda and T Izumi and T Kawaguchi and S Kikuta and K Kohno and Y Komiyama and R H Lupton and T Minezaki and S Miyazaki and T Morokuma and H Murayama and M Niida and A J Nishizawa and M Oguri and Y Ono and M Ouchi and P A Price and H Sameshima and A Schulze and H Shirakata and J D Silverman and N Sugiyama and P J Tait and M Takada and T Takata and M Tanaka and J J Tang and Y Toba and Y Utsumi and S Y Wang},

url = {http://adsabs.harvard.edu/abs/2018PASJ...70S..35M},

doi = {10.1093/pasj/psx046},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {S35},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70...36I,

title = {Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). III. Star formation properties of the host galaxies at z > 6 studied with ALMA},

author = {T Izumi and M Onoue and H Shirakata and T Nagao and K Kohno and Y Matsuoka and M Imanishi and M A Strauss and N Kashikawa and A Schulze and J D Silverman and S Fujimoto and Y Harikane and Y Toba and H Umehata and K Nakanishi and J E Greene and Y Tamura and A Taniguchi and Y Yamaguchi and T Goto and Y Hashimoto and S Ikarashi and D Iono and K Iwasawa and C H Lee and R Makiya and T Minezaki and J J Tang},

url = {http://adsabs.harvard.edu/abs/2018PASJ...70...36I},

doi = {10.1093/pasj/psy026},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {36},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJS..237....5M,

title = {Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). IV. Discovery of 41 Quasars and Luminous Galaxies at 5.7 < z < 6.9},

author = {Y Matsuoka and K Iwasawa and M Onoue and N Kashikawa and M A Strauss and C H Lee and M Imanishi and T Nagao and M Akiyama and N Asami and J Bosch and H Furusawa and T Goto and J E Gunn and Y Harikane and H Ikeda and T Izumi and T Kawaguchi and N Kato and S Kikuta and K Kohno and Y Komiyama and R H Lupton and T Minezaki and S Miyazaki and T Morokuma and H Murayama and M Niida and A J Nishizawa and M Oguri and Y Ono and M Ouchi and P A Price and H Sameshima and A Schulze and H Shirakata and J D Silverman and N Sugiyama and P J Tait and M Takada and T Takata and M Tanaka and J J Tang and Y Toba and Y Utsumi and S Y Wang and T Yamashita},

url = {http://adsabs.harvard.edu/abs/2018ApJS..237....5M},

doi = {10.3847/1538-4365/aac724},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal, Supplement},

volume = {237},

pages = {5},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...869..150M,

title = {Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6},

author = {Y Matsuoka and M A Strauss and N Kashikawa and M Onoue and K Iwasawa and J -J Tang and C H Lee and M Imanishi and T Nagao and M Akiyama and N Asami and J Bosch and H Furusawa and T Goto and J E Gunn and Y Harikane and H Ikeda and T Izumi and T Kawaguchi and N Kato and S Kikuta and K Kohno and Y Komiyama and R H Lupton and T Minezaki and S Miyazaki and H Murayama and M Niida and A J Nishizawa and A Noboriguchi and M Oguri and Y Ono and M Ouchi and P A Price and H Sameshima and A Schulze and H Shirakata and J D Silverman and N Sugiyama and P J Tait and M Takada and T Takata and M Tanaka and Y Toba and Y Utsumi and S Y Wang and T Yamashita},

url = {http://adsabs.harvard.edu/abs/2018ApJ...869..150M},

doi = {10.3847/1538-4357/aaee7a},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal},

volume = {869},

pages = {150},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...865..125T,

title = {The Missing Satellite Problem Outside of the Local Group. I. Pilot Observation},

author = {M Tanaka and M Chiba and K Hayashi and Y Komiyama and T Okamoto and A P Cooper and S Okamoto and L Spitler},

url = {http://adsabs.harvard.edu/abs/2018ApJ...865..125T},

doi = {10.3847/1538-4357/aad9fe},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal},

volume = {865},

pages = {125},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...867..117T,

title = {The Dust-selected Molecular Clouds in the Northeast Region of the Small Magellanic Cloud},

author = {T Takekoshi and T Minamidani and S Komugi and K Kohno and T Tosaki and K Sorai and E Muller and N Mizuno and A Kawamura and T Onishi and Y Fukui and C Bot and M Rubio and H Ezawa and T Oshima and J E Austermann and H Matsuo and I Aretxaga and D ~H Hughes and R Kawabe and G W Wilson and M S Yun},

url = {http://adsabs.harvard.edu/abs/2018ApJ...867..117T},

doi = {10.3847/1538-4357/aae48b},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal},

volume = {867},

pages = {117},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70...83H,

title = {VERA monitoring of the radio jet 3C 84 in the period of 2007-2013: Detection of non-linear motion},

author = {K Hiura and H Nagai and M Kino and K Niinuma and K Sorai and H Chida and K Akiyama and F DÁmmando and G Giovannini and M Giroletti and K Hada and M Honma and S Koyama and M Orienti and G Orosz and S Sawada-Satoh},

url = {http://adsabs.harvard.edu/abs/2018PASJ...70...83H},

doi = {10.1093/pasj/psy078},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {83},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018MNRAS.480.3356P,

title = {The changing GMC population in galaxy interactions},

author = {A R Pettitt and F Egusa and C L Dobbs and E J Tasker and Y Fujimoto and A Habe},

url = {http://adsabs.harvard.edu/abs/2018MNRAS.480.3356P},

doi = {10.1093/mnras/sty2040},

year  = {2018},

date = {2018-01-01},

journal = {Monthly Notices of the RAS},

volume = {480},

pages = {3356-3375},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...866...77E,

title = {Molecular Gas and Star Formation Properties in Early Stage Mergers: SMA CO(2-1) Observations of the LIRGs NGC 3110 and NGC 232},

author = {D Espada and S Martin and S Verley and A R Pettitt and S Matsushita and M Argudo-Fernández and Z Randriamanakoto and P Y Hsieh and T Saito and R E Miura and Y Kawana and J Sabater and L Verdes-Montenegro and P T P Ho and R Kawabe and D Iono},

url = {http://adsabs.harvard.edu/abs/2018ApJ...866...77E},

doi = {10.3847/1538-4357/aae07e},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal},

volume = {866},

pages = {77},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASA...35...31P,

title = {Phantom: A Smoothed Particle Hydrodynamics and Magnetohydrodynamics Code for Astrophysics},

author = {D J Price and J Wurster and T S Tricco and C Nixon and S Toupin and A Pettitt and C Chan and D Mentiplay and G Laibe and S Glover and C Dobbs and R Nealon and D Liptai and H Worpel and C Bonnerot and G Dipierro and G Ballabio and E Ragusa and C Federrath and R Iaconi and T Reichardt and D Forgan and M Hutchison and T Constantino and B Ayliffe and K Hirsh and G Lodato},

url = {http://adsabs.harvard.edu/abs/2018PASA...35...31P},

doi = {10.1017/pasa.2018.25},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the Astron. Soc. of Australia},

volume = {35},

pages = {e031},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70S..58T,

title = {Formation of massive, dense cores by cloud-cloud collisions},

author = {Ken {Takahira} and Kazuhiro {Shima} and Asao {Habe} and Elizabeth J {Tasker}},

url = {https://ui.adsabs.harvard.edu/abs/2018PASJ...70S..58T/abstract},

doi = {10.1093/pasj/psy011},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {S58},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70S..54S,

title = {The effect of photoionizing feedback on star formation in isolated and colliding clouds},

author = {Kazuhiro {Shima} and Elizabeth J {Tasker} and Christoph {Federrath} and Asao {Habe}},

url = {https://ui.adsabs.harvard.edu/abs/2018PASJ...70S..54S/abstract},

doi = {10.1093/pasj/psx124},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {S54},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70S..51T,

title = {Large-scale CO J = 1-0 observations of the giant molecular cloud associated with the infrared ring N35 with the Nobeyama 45 m telescope},

author = {Kazufumi {Torii} and Shinji {Fujita} and Mitsuhiro {Matsuo} and Atsushi {Nishimura} and Mikito {Kohno} and Mika {Kuriki} and Yuya {Tsuda} and Tetsuhiro {Minamidani} and Tomofumi {Umemoto} and Nario {Kuno} and Yusuke {Hattori} and Satoshi {Yoshiike} and Akio {Ohama} and Kengo {Tachihara} and Kazuhiro {Shima} and Asao {Habe} and Yasuo {Fukui}},

url = {https://ui.adsabs.harvard.edu/abs/2018PASJ...70S..51T/abstract},

doi = {10.1093/pasj/psy019},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {S51},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ..tmp..121T,

title = {CO observations of the molecular gas in the Galactic H II region Sh2-48: Evidence for cloud-cloud collision as a trigger of high-mass star formation},

author = {Kazufumi {Torii} and Yusuke {Hattori} and Mitsuhiro {Matsuo} and Shinji {Fujita} and Atsushi {Nishimura} and Mikito {Kohno} and Mika {Kuriki} and Yuya {Tsuda} and Tetsuhiro {Minamidani} and Tomofumi {Umemoto} and Nario {Kuno} and Satoshi {Yoshiike} and Akio {Ohama} and Kengo {Tachihara} and Yasuo {Fukui} and Kazuhiro {Shima} and Asao {Habe} and Thomas J {Haworth}},

url = {https://ui.adsabs.harvard.edu/abs/2018PASJ..tmp..121T/abstract},

doi = {10.1093/pasj/psy098},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70...37M,

title = {Large velocity dispersion of molecular gas in bars of strongly barred galaxies NGC 1300 and NGC 5383},

author = {Fumiya {Maeda} and Kouji {Ohta} and Yusuke {Fujimoto} and Asao {Habe} and Junichi {Baba}},

url = {https://ui.adsabs.harvard.edu/abs/2018PASJ...70...37M/abstract},

doi = {10.1093/pasj/psy028},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

number = {3},

pages = {37},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...859..166F,

title = {A New Look at the Molecular Gas in M42 and M43: Possible Evidence for Cloud-Cloud Collision that Triggered Formation of the OB Stars in the Orion Nebula Cluster},

author = {Yasuo {Fukui} and Kazufumi {Torii} and Yusuke {Hattori} and Atsushi {Nishimura} and Akio {Ohama} and Yoshito {Shimajiri} and Kazuhiro {Shima} and Asao {Habe} and Hidetoshi {Sano} and Mikito {Kohno} and Hiroaki {Yamamoto} and Kengo {Tachihara} and Toshikazu {Onishi}},

url = {https://ui.adsabs.harvard.edu/abs/2018ApJ...859..166F/abstract},

doi = {10.3847/1538-4357/aac217},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal},

volume = {859},

number = {2},

pages = {166},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJ...865..125Tb,

title = {The Missing Satellite Problem Outside of the Local Group. I. Pilot Observation},

author = {Masayuki {Tanaka} and Masashi {Chiba} and Kohei {Hayashi} and Yutaka {Komiyama} and Takashi {Okamoto} and Andrew P {Cooper} and Sakurako {Okamoto} and Lee {Spitler}},

url = {https://ui.adsabs.harvard.edu/abs/2018ApJ...865..125T/abstract},

doi = {10.3847/1538-4357/aad9fe},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal},

volume = {865},

number = {2},

pages = {125},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018Natur.557..392H,

title = {The onset of star formation 250 million years after the Big Bang},

author = {Takuya {Hashimoto} and Nicolas {Laporte} and Ken {Mawatari} and Richard S {Ellis} and Akio K {Inoue} and Erik {Zackrisson} and Guido {Roberts-Borsani} and Wei {Zheng} and Yoichi {Tamura} and Franz E {Bauer} and Thomas {Fletcher} and Yuichi {Harikane} and Bunyo {Hatsukade} and Natsuki H {Hayatsu} and Yuichi {Matsuda} and Hiroshi {Matsuo} and Takashi {Okamoto} and Masami {Ouchi} and Roser {Pelló} and Claes-Erik {Rydberg} and Ikkoh {Shimizu} and Yoshiaki {Taniguchi} and Hideki {Umehata} and Naoki {Yoshida}},

url = {https://ui.adsabs.harvard.edu/abs/2018Natur.557..392H/abstract},

doi = {10.1038/s41586-018-0117-z},

year  = {2018},

date = {2018-01-01},

journal = {Nature},

volume = {557},

number = {7705},

pages = {392-395},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018ApJS..237....5Mb,

title = {Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). IV. Discovery of 41 Quasars and Luminous Galaxies at 5.7 ensuremathłeq z ensuremathłeq 6.9},

author = {Yoshiki {Matsuoka} and Kazushi {Iwasawa} and Masafusa {Onoue} and Nobunari {Kashikawa} and Michael A {Strauss} and Chien-Hsiu {Lee} and Masatoshi {Imanishi} and Tohru {Nagao} and Masayuki {Akiyama} and Naoko {Asami} and James {Bosch} and Hisanori {Furusawa} and Tomotsugu {Goto} and James E {Gunn} and Yuichi {Harikane} and Hiroyuki {Ikeda} and Takuma {Izumi} and Toshihiro {Kawaguchi} and Nanako {Kato} and Satoshi {Kikuta} and Kotaro {Kohno} and Yutaka {Komiyama} and Robert H {Lupton} and Takeo {Minezaki} and Satoshi {Miyazaki} and Tomoki {Morokuma} and Hitoshi {Murayama} and Mana {Niida} and Atsushi J {Nishizawa} and Masamune {Oguri} and Yoshiaki {Ono} and Masami {Ouchi} and Paul A {Price} and Hiroaki {Sameshima} and Andreas {Schulze} and Hikari {Shirakata} and John D {Silverman} and Naoshi {Sugiyama} and Philip J {Tait} and Masahiro {Takada} and Tadafumi {Takata} and Masayuki {Tanaka} and Ji-Jia {Tang} and Yoshiki {Toba} and Yousuke {Utsumi} and Shiang-Yu {Wang} and Takuji {Yamashita}},

doi = {10.3847/1538-4365/aac724},

year  = {2018},

date = {2018-01-01},

journal = {Astrophysical Journal, Supplement},

volume = {237},

number = {1},

pages = {5},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70...36Ib,

title = {Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). III. Star formation properties of the host galaxies at z ensuremathgtrsim 6 studied with ALMA},

author = {Takuma {Izumi} and Masafusa {Onoue} and Hikari {Shirakata} and Tohru {Nagao} and Kotaro {Kohno} and Yoshiki {Matsuoka} and Masatoshi {Imanishi} and Michael A {Strauss} and Nobunari {Kashikawa} and Andreas {Schulze} and John D {Silverman} and Seiji {Fujimoto} and Yuichi {Harikane} and Yoshiki {Toba} and Hideki {Umehata} and Kouichiro {Nakanishi} and Jenny E {Greene} and Yoichi {Tamura} and Akio {Taniguchi} and Yuki {Yamaguchi} and Tomotsugu {Goto} and Yasuhiro {Hashimoto} and Soh {Ikarashi} and Daisuke {Iono} and Kazushi {Iwasawa} and Chien-Hsiu {Lee} and Ryu {Makiya} and Takeo {Minezaki} and Ji-Jia {Tang}},

doi = {10.1093/pasj/psy026},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

number = {3},

pages = {36},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2018PASJ...70S..35Mb,

title = {Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). II. Discovery of 32 quasars and luminous galaxies at 5.7 < z ensuremathłeq 6.8},

author = {Yoshiki {Matsuoka} and Masafusa {Onoue} and Nobunari {Kashikawa} and Kazushi {Iwasawa} and Michael A {Strauss} and Tohru {Nagao} and Masatoshi {Imanishi} and Chien-Hsiu {Lee} and Masayuki {Akiyama} and Naoko {Asami} and James {Bosch} and Sébastien {Foucaud} and Hisanori {Furusawa} and Tomotsugu {Goto} and James E {Gunn} and Yuichi {Harikane} and Hiroyuki {Ikeda} and Takuma {Izumi} and Toshihiro {Kawaguchi} and Satoshi {Kikuta} and Kotaro {Kohno} and Yutaka {Komiyama} and Robert H {Lupton} and Takeo {Minezaki} and Satoshi {Miyazaki} and Tomoki {Morokuma} and Hitoshi {Murayama} and Mana {Niida} and Atsushi J {Nishizawa} and Masamune {Oguri} and Yoshiaki {Ono} and Masami {Ouchi} and Paul A {Price} and Hiroaki {Sameshima} and Andreas {Schulze} and Hikari {Shirakata} and John D {Silverman} and Naoshi {Sugiyama} and Philip J {Tait} and Masahiro {Takada} and Tadafumi {Takata} and Masayuki {Tanaka} and Ji-Jia {Tang} and Yoshiki {Toba} and Yousuke {Utsumi} and Shiang-Yu {Wang}},

doi = {10.1093/pasj/psx046},

year  = {2018},

date = {2018-01-01},

journal = {Publications of the ASJ},

volume = {70},

pages = {S35},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pettitt17,

title = {Star formation and ISM morphology in tidally induced spiral structures},

author = {Alex Pettitt and Elizabeth Tasker and James Wadsley and Ben Keller and Samantha Benincasa},

url = {http://adsabs.harvard.edu/abs/2017MNRAS.468.4189P},

doi = {10.1093/mnras/stx736},

year  = {2017},

date = {2017-07-01},

journal = {MNRAS},

volume = {468},

number = {4},

pages = {4189-4204},

abstract = {Tidal encounters are believed to be one of the key drivers of galactic spiral structure in the Universe. Such spirals are expected to produce different morphological and kinematic features compared to density wave and dynamic spiral arms. In this work we present high resolution simulations of a tidal encounter of a small mass companion with a disc galaxy. Included are the effects of gas cooling and heating, star formation and stellar feedback. The structure of the perturbed disc differs greatly from the isolated galaxy, showing clear spiral features that act as sites of new star formation, and displaying interarm spurs. The two arms of the galaxy, the bridge and tail, appear to behave differently; with different star formation histories and structure. Specific attention is focused on offsets between gas and stellar spiral features which can be directly compared to observations. We find some offsets do exist between different media, with gaseous arms appearing mostly on the convex side of the stellar arms, though the exact locations appear highly time dependent. These results further highlight the differences between tidal spirals and other theories of arm structure.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Sedigism,

title = {SEDIGISM: Structure, excitation, and dynamics of the inner Galactic interstellar medium},

author = {F. Schuller and T. Csengeri and J. S. Urquhart and A. Duarte-Cabral and P. J. Barnes and A. Giannetti and A. K. Hernandez and S. Leurini and M. Mattern and S.-N. X. Medina and C. Agurto and F. Azagra and L. D. Anderson and M. T. Beltrán and H. Beuther and S. Bontemps and L. Bronfman and C. L. Dobbs and M. Dumke and R. Finger and A. Ginsburg and E. Gonzalez and T. Henning and J. Kauffmann and F. Mac-Auliffe K. M. Menten and F. M. Montenegro-Montes and T. J. T. Moore and E. Muller and R. Parra and J.-P. Perez-Beaupuits and A. Pettitt and D. Russeil and Á. Sánchez-Monge and P. Schilke and E. Schisano and S. Suri and L. Testi and K. Torstensson and P. Venegas and K. Wang and M. Wienen and F. Wyrowski and A. Zavagno},

url = {http://adsabs.harvard.edu/abs/2017A%26A...601A.124S

http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/601/A124},

year  = {2017},

date = {2017-05-01},

journal = {Astronomy & Astrophysics},

volume = {601},

number = {A124},

pages = {25},

abstract = {Context. The origin and life-cycle of molecular clouds are still poorly constrained, despite their importance for understanding the evolution of the interstellar medium. Many large-scale surveys of the Galactic plane have been conducted recently, allowing for rapid progress in this field. Nevertheless, a sub-arcminute resolution global view of the large-scale distribution of molecular gas, from the diffuse medium to dense clouds and clumps, and of their relationship to the spiral structure, is still missing. 

Aims: We have carried out a systematic, homogeneous, spectroscopic survey of the inner Galactic plane, in order to complement the many continuum Galactic surveys available with crucial distance and gas-kinematic information. Our aim is to combine this data set with recent infrared to sub-millimetre surveys at similar angular resolutions. 

Methods: The SEDIGISM survey covers 78 deg2 of the inner Galaxy (-60°≤ℓ≤ 18°, |b|≤ 0.5°) in the J = 2-1 rotational transition of 13CO. This isotopologue of CO is less abundant than 12CO by factors up to 100. Therefore, its emission has low to moderate optical depths, and higher critical density, making it an ideal tracer of the cold, dense interstellar medium. The data have been observed with the SHFI single-pixel instrument at APEX. The observational setup covers the 13CO(2-1) and C18O(2-1) lines, plus several transitions from other molecules. 

Results: The observations have been completed. Data reduction is in progress, and the final data products will be made available in the near future. Here we give a detailed description of the survey and the dedicated data reduction pipeline. To illustrate the scientific potential of this survey, preliminary results based on a science demonstration field covering -20°≤ℓ ≤ -18.5° are presented. Analysis of the 13CO(2-1) data in this field reveals compact clumps, diffuse clouds, and filamentary structures at a range of heliocentric distances. By combining our data with data in the (1-0) transition of CO isotopologues from the ThrUMMS survey, we are able to compute a 3D realization of the excitation temperature and optical depth in the interstellar medium. Ultimately, this survey will provide a detailed, global view of the inner Galactic interstellar medium at an unprecedented angular resolution of 30''.

},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Shima2017,

title = {Does feedback help or hinder star formation? The effect of photoionization on star formation in giant molecular clouds},

author = {Kazuhiro Shima, Elizabeth Tasker, Asao Habe},

url = {http://adsabs.harvard.edu/abs/2017MNRAS.467..512S},

doi = {10.1093/mnras/stw3279},

year  = {2017},

date = {2017-05-01},

journal = {MNRAS},

volume = {467},

abstract = {We investigated the effect of photoionizing feedback inside turbulent star-forming clouds, comparing the resultant star formation in both idealized profiles and more realistic cloud structures drawn from a global galaxy simulation. We performed a series of numerical simulations that compared the effect of star formation alone, photoionization and photoionization plus supernovae feedback. In the idealized cloud, photoionization suppresses gas fragmentation at early times, resulting in the formation of more massive stars and an increase in the star formation efficiency. At later times, the dispersal of the dense gas causes the radiative feedback effect to switch from positive to negative as the star formation efficiency drops. In the cloud extracted from the global simulation, the initial cloud is heavily fragmented prior to the stellar-feedback beginning and is largely structurally unaffected by the late injection of radiation energy. The result is a suppression of the star formation. We conclude that the efficiency of feedback is heavily dependent on the gas structure, with negative feedback dominating when the density is high.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017FrASS...4...13S,

title = {Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies - 2. Importance of AGN Feedback Suggested by Stellar Age - Velocity Dispersion Relation},

author = {H Shirakata and T Kawaguchi and T Okamoto and T Ishiyama},

url = {http://adsabs.harvard.edu/abs/2017FrASS...4...13S},

doi = {10.3389/fspas.2017.00013},

year  = {2017},

date = {2017-01-01},

journal = {Frontiers in Astronomy and Space Sciences},

volume = {4},

pages = {13},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017FrASS...4...15S,

title = {Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies - 1. Effect of Seed BH Mass},

author = {H Shirakata and T Kawaguchi and T Okamoto and R Makiya and T Ishiyama and Y Matsuoka and M Nagashima and M Enoki and T Oogi and M A R Kobayashi},

url = {http://adsabs.harvard.edu/abs/2017FrASS...4...15S},

doi = {10.3389/fspas.2017.00015},

year  = {2017},

date = {2017-01-01},

journal = {Frontiers in Astronomy and Space Sciences},

volume = {4},

pages = {15},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017MNRAS.471L..21O,

title = {Imprints of the super-Eddington accretion on the quasar clustering},

author = {T Oogi and M Enoki and T Ishiyama and M A R Kobayashi and R Makiya and M Nagashima and T Okamoto and H Shirakata},

url = {http://adsabs.harvard.edu/abs/2017MNRAS.471L..21O},

doi = {10.1093/mnrasl/slx102},

year  = {2017},

date = {2017-01-01},

journal = {Monthly Notices of the RAS},

volume = {471},

pages = {L21-L25},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017MNRAS.464.4866O,

title = {The metal enrichment of passive galaxies in cosmological simulations of galaxy formation},

author = {T Okamoto and M Nagashima and C G Lacey and C S Frenk},

url = {http://adsabs.harvard.edu/abs/2017MNRAS.464.4866O},

doi = {10.1093/mnras/stw2729},

year  = {2017},

date = {2017-01-01},

journal = {Monthly Notices of the RAS},

volume = {464},

pages = {4866-4874},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017PASJ...69...82M,

title = {OISTER optical and near-infrared monitoring observations of peculiar radio-loud active galactic nucleus SDSS J110006.07+442144.3},

author = {T Morokuma and M Tanaka and Y T Tanaka and R Itoh and N Tominaga and P Gandhi and E Pian and P Mazzali and K Ohta and E Matsumoto and T Shibata and H Akimoto and H Akitaya and G B Ali and T Aoki and M Doi and N Ebisuda and A Essam and K Fujisawa and H Fukushima and S Goda and Y Gouda and H Hanayama and Y Hashiba and O Hashimoto and K Hayashida and Y Hiratsuka and S Honda and M Imai and K Inoue and M Ishibashi and I Iwata and H Izumiura and Y Kanda and M Kawabata and K Kawaguchi and N Kawai and M Kokubo and D Kuroda and H Maehara and H Mito and K Mitsuda and R Miyagawa and T Miyaji and Y Miyamoto and K Morihana and Y Moritani and K Morokuma-Matsui and K Murakami and K ~L Murata and T Nagayama and K Nakamura and T Nakaoka and K Niinuma and T Nishimori and D Nogami and Y Oasa and T Oda and T Ohshima and Y Saito and S Sakata and S Sako and Y Sarugaku and S Sawada-Satoh and G Seino and K Sorai and T Soyano and F Taddia and J Takahashi and Y Takagi and K Takaki and K Takata and K Tarusawa and M Uemura and T Ui and R Urago and K Ushioda and J -i Watanabe and M Watanabe and S Yamashita and K Yanagisawa and Y Yonekura and M Yoshida},

url = {http://adsabs.harvard.edu/abs/2017PASJ...69...82M},

doi = {10.1093/pasj/psx075},

year  = {2017},

date = {2017-01-01},

journal = {Publications of the ASJ},

volume = {69},

pages = {82},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017ApJ...849...23M,

title = {A Face-on Accretion System in High-mass Star Formation: Possible Dusty Infall Streams within 100 AU},

author = {K Motogi and T Hirota and K Sorai and Y Yonekura and K Sugiyama and M Honma and K Niinuma and K Hachisuka and K Fujisawa and A J Walsh},

url = {http://adsabs.harvard.edu/abs/2017ApJ...849...23M},

doi = {10.3847/1538-4357/aa8d75},

year  = {2017},

date = {2017-01-01},

journal = {Astrophysical Journal},

volume = {849},

pages = {23},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017PASJ...69...67H,

title = {CO Multi-line Imaging of Nearby Galaxies (COMING). II. Transitions between atomic and molecular gas, diffuse and dense gas, gas and stars in the dwarf galaxy NGC 2976},

author = {T Hatakeyama and N Kuno and K Sorai and H Kaneko and Y Miyamoto and K Muraoka and M Takeda and K Yanagitani and N Kishida and M Umei and T Tanaka and Y Tomiyasu and H Nakanishi and C Saita and S Ueno and D Salak and N Matsumoto and K Morokuma-Matsui and H A Pan and N Nakai},

url = {http://adsabs.harvard.edu/abs/2017PASJ...69...67H},

doi = {10.1093/pasj/psx044},

year  = {2017},

date = {2017-01-01},

journal = {Publications of the ASJ},

volume = {69},

pages = {67},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017ApJ...835...55T,

title = {The 1.1 mm Continuum Survey of the Small Magellanic Cloud: Physical Properties and Evolution of the Dust-selected Clouds},

author = {T Takekoshi and T Minamidani and S Komugi and K Kohno and T Tosaki and K Sorai and E Muller and N Mizuno and A Kawamura and T Onishi and Y Fukui and H Ezawa and T Oshima and K S Scott and J E Austermann and H Matsuo and I Aretxaga and D H Hughes and R Kawabe and G W Wilson and M S Yun},

url = {http://adsabs.harvard.edu/abs/2016PASJ...68...89M},

doi = {10.3847/1538-4357/835/1/55},

year  = {2017},

date = {2017-01-01},

journal = {Astrophysical Journal},

volume = {835},

pages = {55},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017MNRAS.469..383J,

title = {On the effective turbulence driving mode of molecular clouds formed in disc galaxies},

author = {Keitaro {Jin} and Diane M {Salim} and Christoph {Federrath} and Elizabeth J {Tasker} and Asao {Habe} and Jouni T {Kainulainen}},

url = {https://ui.adsabs.harvard.edu/abs/2017MNRAS.469..383J/abstract},

doi = {10.1093/mnras/stx737},

year  = {2017},

date = {2017-01-01},

journal = {Monthly Notices of the RAS},

volume = {469},

number = {1},

pages = {383-393},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017ApJ...835..142T,

title = {Triggered O Star Formation in M20 via Cloud-Cloud Collision: Comparisons between High-resolution CO Observations and Simulations},

author = {K {Torii} and Y {Hattori} and K {Hasegawa} and A {Ohama} and T ~J {Haworth} and K {Shima} and A {Habe} and K {Tachihara} and N {Mizuno} and T {Onishi} and A {Mizuno} and Y {Fukui}},

url = {https://ui.adsabs.harvard.edu/abs/2017ApJ...835..142T/abstract},

doi = {10.3847/1538-4357/835/2/142},

year  = {2017},

date = {2017-01-01},

journal = {Astrophysical Journal},

volume = {835},

number = {2},

pages = {142},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017MNRAS.471L..21Ob,

title = {Imprints of the super-Eddington accretion on the quasar clustering},

author = {Taira {Oogi} and Motohiro {Enoki} and Tomoaki {Ishiyama} and Masakazu A ~R {Kobayashi} and Ryu {Makiya} and Masahiro {Nagashima} and Takashi {Okamoto} and Hikari {Shirakata}},

url = {https://ui.adsabs.harvard.edu/abs/2017MNRAS.471L..21O/abstract},

doi = {10.1093/mnrasl/slx102},

year  = {2017},

date = {2017-01-01},

journal = {Monthly Notices of the RAS},

volume = {471},

number = {1},

pages = {L21-L25},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017MNRAS.464.4866Ob,

title = {The metal enrichment of passive galaxies in cosmological simulations of galaxy formation},

author = {Takashi {Okamoto} and Masahiro {Nagashima} and Cedric G {Lacey} and Carlos S {Frenk}},

url = {https://ui.adsabs.harvard.edu/abs/2017MNRAS.464.4866O/abstract},

doi = {10.1093/mnras/stw2729},

year  = {2017},

date = {2017-01-01},

journal = {Monthly Notices of the RAS},

volume = {464},

number = {4},

pages = {4866-4874},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2017MNRAS.466L.123I,

title = {Radiation feedback in dusty clouds},

author = {Shohei {Ishiki} and Takashi {Okamoto}},

url = {https://ui.adsabs.harvard.edu/abs/2017MNRAS.466L.123I/abstract},

doi = {10.1093/mnrasl/slw253},

year  = {2017},

date = {2017-01-01},

journal = {Monthly Notices of the RAS},

volume = {466},

number = {1},

pages = {L123-L127},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Dobbs16,

title = {Magnetic field evolution and reversals in spiral galaxies},

author = {Clare Dobbs and Daniel Price and Alex Pettitt and Matthew Bate and Terrance Tricco},

url = {http://adsabs.harvard.edu/abs/2016MNRAS.461.4482D},

doi = {10.1093/mnras/stw1625},

year  = {2016},

date = {2016-10-01},

journal = {MNRAS},

volume = {461},

number = {4},

pages = {4482-4495},

abstract = {We study the evolution of galactic magnetic fields using 3D smoothed particle magnetohydrodynamics (SPMHD) simulations of galaxies with an imposed spiral potential. We consider the appearance of reversals of the field, and amplification of the field. We find magnetic field reversals occur when the velocity jump across the spiral shock is above $approx$20km s$^{-1}$, occurring where the velocity change is highest, typically at the inner Lindblad resonance (ILR) in our models. Reversals also occur at corotation, where the direction of the velocity field reverses in the co-rotating frame of a spiral arm. They occur earlier with a stronger amplitude spiral potential, and later or not at all with weaker or no spiral arms. The presence of a reversal at a radii of around 4-6 kpc in our fiducial model is consistent with a reversal identified in the Milky Way, though we caution that alternative Galaxy models could give a similar reversal. We find that relatively high resolution, a few million particles in SPMHD, is required to produce consistent behaviour of the magnetic field. Amplification of the magnetic field occurs in the models, and while some may be genuinely attributable to differential rotation or spiral arms, some may be a numerical artefact. We check our results using Athena, finding reversals but less amplification of the field, suggesting that some of the amplification of the field with SPMHD is numerical.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Few2016,

title = {Testing hydrodynamics schemes in galaxy disc simulations},

author = {Gareth Few and Clare Dobbs and Alex Pettitt and Lukas Konstandin},

url = {http://adsabs.harvard.edu/abs/2016MNRAS.460.4382F},

doi = {10.1093/mnras/stw1226},

year  = {2016},

date = {2016-08-01},

journal = {MNRAS},

volume = {460},

number = {4},

pages = {4382-4396},

abstract = {We examine how three fundamentally different numerical hydrodynamics codes follow the evolution of an isothermal galactic disc with an external spiral potential. We compare an adaptive mesh refinement code (RAMSES), a smoothed particle hydrodynamics code (SPHNG), and a volume-discretized mesh-less code (GIZMO). Using standard refinement criteria, we find that RAMSES produces a disc that is less vertically concentrated and does not reach such high densities as the SPHNG or GIZMO runs. The gas surface density in the spiral arms increases at a lower rate for the RAMSES simulations compared to the other codes. There is also a greater degree of substructure in the SPHNG and GIZMO runs and secondary spiral arms are more pronounced. By resolving the Jeans length with a greater number of grid cells, we achieve more similar results to the Lagrangian codes used in this study. Other alterations to the refinement scheme (adding extra levels of refinement and refining based on local density gradients) are less successful in reducing the disparity between RAMSES and SPHNG/GIZMO. Although more similar, SPHNG displays different density distributions and vertical mass profiles to all modes of GIZMO (including the smoothed particle hydrodynamics version). This suggests differences also arise which are not intrinsic to the particular method but rather due to its implementation. The discrepancies between codes (in particular, the densities reached in the spiral arms) could potentially result in differences in the locations and time-scales for gravitational collapse, and therefore impact star formation activity in more complex galaxy disc simulations.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pettitt2016,

title = {Gas and stellar spiral structures in tidally perturbed disc galaxies},

author = {Alex Pettitt and Elizabeth Tasker and James Wadsley },

url = {http://mnras.oxfordjournals.org/content/458/4/3990},

doi = {10.1093/mnras/stw588},

year  = {2016},

date = {2016-06-01},

journal = {MNRAS},

volume = {458},

number = {4},

pages = {3990-4007},

abstract = {Tidal interactions between disc galaxies and low-mass companions are an established method for generating galactic spiral features. In this work, we present a study of the structure and dynamics of spiral arms driven in interactions between disc galaxies and perturbing companions in 3D N-body/smoothed hydrodynamical numerical simulations. Our specific aims are to characterize any differences between structures formed in the gas and stars from a purely hydrodynamical and gravitational perspective, and to find a limiting case for spiral structure generation. Through analysis of a number of different interacting cases, we find that there is very little difference between arm morphology, pitch angles and pattern speeds between the two media. The main differences are a minor offset between gas and stellar arms, clear spurring features in gaseous arms, and different radial migration of material in the stronger interacting cases. We investigate the minimum mass of a companion required to drive spiral structure in a galactic disc, finding the limiting spiral generation cases with companion masses of the order of 1 × 109 M⊙, equivalent to only 4 per cent of the stellar disc mass, or 0.5 per cent of the total galactic mass of a Milky Way analogue.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2016PASJ...68...25M,

title = {The New Numerical Galaxy Catalog (v^2GC): An updated semi-analytic model of galaxy and active galactic nucleus formation with large cosmological N-body simulations},

author = {R Makiya and M Enoki and T Ishiyama and M A R Kobayashi and M Nagashima and T Okamoto and K Okoshi and T Oogi and H Shirakata},

url = {http://adsabs.harvard.edu/abs/2016PASJ...68...25M},

doi = {10.1093/pasj/psw005},

year  = {2016},

date = {2016-01-01},

journal = {Publications of the ASJ},

volume = {68},

pages = {25},

keywords = {},

pubstate = {published},

tppubtype = {article}

}