BD-18_5550: found in 17 paper(s).

Labels:

/D.L.Burris et al.(2000)/ /R.Cayrel et al.(2004)/ /M.Spite et al.(2005)/ /J.A.Johnson(2002)/ /A.McWilliam et al.(1995)/ /A.McWilliam et al.(1995)/ /J.Melendez and B. Barbuy(2002)/ /T.V.Mishenina et al.(2002)/ /T.V.Mishenina and V. V. Kovtyukh(2001)/ /M.Spite et al.(2006)/ /S.M.Andrievsky et al.(2007)/ /J.A.Johnson et al.(2007)/ /G.Bihain et al.(2004)/ /B.W.Carney et al.(2003)/ /S.M.Andrievsky et al.(2008)/ /J.A.Johnson and M. Bolte(2002)/ /J.A.Johnson and M. Bolte(2001)/

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A0014

Title NEUTRON-CAPTURE ELEMENTS IN THE EARLY GALAXY: INSIGHTS FROM A LARGE SAMPLE OF METAL-POOR GIANTS
ADS D.L.Burris et al.,ApJ, 544, 302, 2000
Authors D. L. Burris, C. A. Pilachowski, T. E. Armandroff, C. Sneden, J. J. Cowan, H. Roe

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A N/A MAYALLKPNO 20000 100-200 N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Atmospheric data

Teff 4575
log g 1.40
vturb 1.80

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Fe...-2.93...4.57
Ba...-3.83-0.90-1.70
Eu...-3.00-0.07-2.49
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0016

Title First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy
ADS R.Cayrel et al.,AAP, 416, 1117, 2004
Authors R. Cayrel, E. Depagne, M. Spite, V. Hill, F. Spite, P. Francois, B. Plez, T. Beers, F. Primas, J. Andersen, B. Barbuy, P. Bonifacio, P. Molaro, B. Nordstrom

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2000-10 N/A VLT 47000 220 1800 N/A
2001-09 N/A VLT N/A N/A N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Binarity

Photometric data

V 9.35

Atmospheric data

Teff 4750
log g 1.4
vturb 1.8

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
CH...-3.08-0.025.44
O I...-2.640.426.13
Na I...-3.010.053.32
Mg I...-2.75+-0.150.31+-0.154.83+-0.15
Al I...-3.65-0.592.82
Si I...-2.670.394.88
K I...-2.540.522.58
Ca I...-2.65+-0.100.41+-0.103.71+-0.10
Sc II...-3.02+-0.090.04+-0.090.15+-0.09
Ti I...-2.90+-0.040.16+-0.042.12+-0.04
Ti II...-2.92+-0.090.14+-0.092.10+-0.09
Cr I...-3.40+-0.10-0.34+-0.102.27+-0.10
Mn I...-3.44+-0.05-0.38+-0.051.95+-0.05
Fe I...-3.06+-0.120.00+-0.124.44+-0.12
Fe II...-3.06+-0.100.00+-0.104.44+-0.10
Co I...-2.87+-0.120.19+-0.122.05+-0.12
Ni I...-3.11+-0.10-0.05+-0.103.14+-0.10
Zn I...-2.840.221.76
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0025

Title First stars VI – Abundances of C, N, O, Li, and mixing in extremely metal-poor giants. Galactic evolution of the light elements
ADS M.Spite et al.,AAP, 430, 655, 2005
Authors M. Spite, R. Cayrel, B. Plez, V. Hill, F. Spite, E. Depagne, P. Francois, P. Bonifacio, B. Barbuy, T. Beers, J. Andersen, P. Molaro, B. Nordstrom, F. Primas

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Basic Informations

Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.35

Atmospheric data

Teff 4750
log g 1.4
vturb 1.8

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Li I...-0.41+-0.042.65+-0.040.75+-0.04
C...-3.08+-0.04-0.02+-0.045.47+-0.04
N...-3.42-0.364.55
O I...-2.640.426.23
Fe...-3.06...4.44
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0031

Title ABUNDANCES OF 30 ELEMENTS IN 23 METAL-POOR STARS
ADS J.A.Johnson et al.,ApJS, 139, 219, 2002
Authors J. A. Carnegie Institute of Washington, CIW. Johnson

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
1997-05-12 N/A KECKHIRES 45000 350 1800 N/A
1997-06-20 N/A KECKHIRES 45000 N/A 1800 N/A
1998-08-12 N/A LICKHAMILTON 60000 90 2700 N/A
1997-05-12 N/A KECKHIRES 45000 350 1800 N/A
1997-06-20 N/A KECKHIRES 45000 N/A 1800 N/A
1998-08-12 N/A LICKHAMILTON 60000 90 2700 N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.35
V-R 0.885
V-K 2.706
EB-V 0.08

Atmospheric data

Teff 4600
log g 0.95
vturb 1.90

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Na I...-2.86+-0.210.17+-0.213.47+-0.21
Mg I...-2.41+-0.140.62+-0.145.17+-0.14
Al I...-3.53+-0.26-0.50+-0.262.94+-0.26
Si I...-2.54+-0.220.49+-0.225.01+-0.22
Ca I...-2.63+-0.040.40+-0.043.73+-0.04
Sc II...-3.17+-0.10-0.14+-0.100.00+-0.10
Ti I...-2.97+-0.080.06+-0.082.05+-0.08
Ti II...-2.93+-0.070.10+-0.072.09+-0.07
V I...-3.12+-0.11-0.09+-0.110.88+-0.11
V II...-3.12+-0.08-0.09+-0.080.88+-0.08
Cr I...-3.24+-0.07-0.21+-0.072.43+-0.07
Cr II...-2.87+-0.110.16+-0.112.80+-0.11
Mn I...-3.36+-0.08-0.33+-0.082.03+-0.08
Mn II...-3.20+-0.16-0.17+-0.162.19+-0.16
Fe I...-3.03+-0.08...4.47+-0.08
Fe II...-3.04+-0.08...4.46+-0.08
Co I...-2.80+-0.120.23+-0.122.12+-0.12
Ni I...-2.98+-0.150.05+-0.153.27+-0.15
Zn I...-2.66+-0.050.37+-0.051.94+-0.05
Y II...-4.05+-0.05-1.02+-0.05-1.81+-0.05
Zr II...-3.82+-0.09-0.79+-0.09-1.22+-0.09
Ba II...-3.80+-0.16-0.77+-0.16-1.67+-0.16
La II...-3.60+-0.14-0.57+-0.14-2.43+-0.14
Pr II...<-2.40<0.63<-1.69
Eu II...-3.30+-0.22-0.27+-0.22-2.79+-0.22
Tb II...<-2.15<0.88<-2.25
Dy II...-3.42+-0.20-0.39+-0.20-2.28+-0.20
Ho II...<-1.16<1.87<-0.90
Er II...-3.15+-0.12-0.12+-0.12-2.22+-0.12
Tm II...<-1.47<1.56<-1.47
Yb II...-3.87+-0.21-0.84+-0.21-2.79+-0.21
Hf II...<-1.90<1.13<-1.02
Os I...<-2.00<1.03<-0.55
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0038

Title A Spectroscopic Analysis of 33 of the Most Metal-Poor Stars.I.
ADS A.McWilliam et al.,AJ, 109, 2736, 1995
Authors A. McWilliam, G. W. Preston, C. Sneden, S. Shectman

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A N/A FRUTTI 22000 N/A N/A N/A

Photometric data

V 9.36
B-V 0.854
V-R 0.577

A0039

Title Spectroscopic Analysis of 33 of the Most Metal Poor Stars. II.
ADS A.McWilliam et al.,AJ, 109, 2757, 1995
Authors A. McWilliam, G. W. Preston, C. Sneden, L. Searle

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A FRUTTI 22000 N/A N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.36
B-V 0.854
V-R 0.577

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
C...-2.910.005.64
Na...-3.09-0.183.24
Mg...-2.470.445.11
Ca...-2.530.383.83
Fe I...-2.91...4.59
Fe II...-2.91...4.59
Ni...-3.04-0.133.21
Sr...-4.07-1.16-1.10
Ba...-3.72-0.81-1.59
Eu...-2.740.17-2.23
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0047

Title Keck NIRSPEC Infrared OH Lines: Oxygen Abundances in Metal-poor Stars down to [Fe/H] = -2.9
ADS J.Melendez et al.,ApJ, 575, 474, 2002
Authors J. Melendez, B. Barbuy

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2001-06-12 N/A KECKNIRSPEC 37000 350 12x120 N/A
2001-10-01 N/A FEROSESO 48000 200 3600 N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.26
B-V 0.599
V-R 0.791
J-K 0.598
V-K 2.389
EB-V 0.117

Atmospheric data

Teff 4683
log g 1.7
vturb 1.7

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
C...-3.26-0.395.29
OH...-2.34+0.536.53
Fe II...-2.87...4.63
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0070

Title Abundances of Cu and Zn in metal-poor stars: Clues for Galaxy evolution
ADS T.V.Mishenina et al.,AAP, 396, 189, 2002
Authors T. V. Mishenina, V. V. Kovtyukh, C. Soubiran, C. Travaglio, M. Busso

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A N/A ELODIE 42000 >100 N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Fe...-3.01...4.49
Zn I...-3.04+-0.26-0.03+-0.261.56+-0.26
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0071

Title Analysis of neutron capture elements in metal-poor stars
ADS T.V.Mishenina et al.,AAP, 370, 951, 2001
Authors T. V. Mishenina, V. V. Kovtyukh

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A N/A ELODIE 42000 >100 N/A N/A

Photometric data

V 9.28
B-V 0.92

Atmospheric data

Teff 4600
log g 0.5
vturb 1.2

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Mg I...-2.730.284.85
Fe...-3.01...4.49
Ba II...-4.13-1.12-2.00
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0091

Title First stars IX - Mixing in extremely metal-poor giants. Variation of the 12C/13C, [Na/Mg] and [Al/Mg] ratios
ADS M.Spite et al.,AAP, 455, 291, 2006
Authors M. Spite, R. Cayrel, V. Hill, F. Spite, P. Francois, B. Plez, P. Bonifacio, P. Molaro, E. Depagne, J. Andersen, B. Barbuy, T. C. Beers, B. Nordstrom, F. Primas

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A VLT 47000 130 N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.35

Atmospheric data

Teff 4750
log g 1.4
vturb 1.8

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
C...-3.08+-0.04-0.02+-0.045.47+-0.04
N...-3.42+-0.10-0.36+-0.104.55+-0.10
Fe...-3.06...4.44
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

Isotope ratio

12C/13C >40

A0110

Title NLTE determination of the sodium abundance in a homogeneous sample of extremely metal-poor stars
ADS S.M.Andrievsky et al.,AAP, 464, 1081, 2007
Authors S. M. Andrievsky, M. Spite, S. A. Korotin, F. Spite, P. Bonifacio, R. Cayrel, V. Hill, P. Francois

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A VLT 43000 200 N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.35

Atmospheric data

Teff 4750
log g 1.4
vturb 1.8

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Na...-3.35-0.292.90
Fe...-3.06...4.44
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0114

Title A Search for Nitrogen-enhanced Metal-poor Stars
ADS J.A.Johnson et al.,ApJ, 658, 1203, 2007
Authors J. A. Johnson, F. Herwig, T. C. Beers, N. Christlieb

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2003-09-05 N/A RCCTIO N/A 192 1200 N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Photometric data

V 9.270
B-V 9.270
U-B 0.910
V-R 0.230
V-K 2.715
EB-V 0.17

Atmospheric data

Teff 4806
log g 1.72
vturb 1.91

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
C...-3.09+-0.29-0.20+-0.295.47+-0.25
Fe...-2.89+-0.21...4.61+-0.21
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0136

Title Cu and Zn in the early Galaxy
ADS G.Bihain et al.,AAP, 423, 777, 2004
Authors G. Bihain, G. Israelian, R. Rebolo, P. Bonifacio, P. Molaro

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A WHTUES N/A 80-150 N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Atmospheric data

Teff 4668+-63
log g 1.5+-0.3
vturb 1.5

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Fe...-3.01...4.49
Cu I...-3.94+-0.20-0.93+-0.200.27+-0.20
Zn I...-2.81+-0.170.20+-0.171.79+-0.17
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0138

Title Spectroscopic Binaries, Velocity Jitter, and Rotation in Field Metal-poor Red Giant and Red Horizontal-Branch Stars
ADS B.W.Carney et al.,AJ, 125, 293, 2003
Authors B. W. Carney, D. W. Latham, R. P. Stefanik, J. B. Laird, J. A. Morse

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A 2445917.65764 WYETH N/A N/A N/A -125.88+-0.87
N/A 2445951.56152 WYETH N/A N/A N/A -125.84+-0.82
N/A 2446281.62347 WYETH N/A N/A N/A -125.52+-0.56
N/A 2446637.69898 WYETH N/A N/A N/A -125.09+-0.53
N/A 2446688.62502 WYETH N/A N/A N/A -125.49+-0.57
N/A 2446990.85128 MMT N/A N/A N/A -125.06+-0.39
N/A 2447390.62202 WYETH N/A N/A N/A -125.33+-0.59
N/A 2447661.97458 TILLINGHAST N/A N/A N/A -125.61+-0.49
N/A 2448408.98262 TILLINGHAST N/A N/A N/A -125.82+-0.46
N/A 2449109.99796 TILLINGHAST N/A N/A N/A -125.11+-0.43
N/A 2450641.75242 WYETH N/A N/A N/A -125.26+-0.52
N/A 2450710.53102 WYETH N/A N/A N/A -125.71+-0.53
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination -181211
Right Ascension 195849.7

Binarity

Vrad -125.48

Photometric data

V-R 0.885
V-K 2.74

Atmospheric data

Teff 4820
log g 1.8

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Fe...-3.11...4.39
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0176

Title NLTE determination of the aluminium abundance in a homogeneous sample of extremely metal-poor stars
ADS S.M.Andrievsky et al.,AAP, 481, 481, 2008
Authors S. M. Andrievsky, M. Spite, S. A. Korotin, F. Spite, P. Bonifacio, R. Cayrel, V. Hill, P. François

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
N/A VLT 47000 120 N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Atmospheric data

Teff 4750
log g 1.4
vturb 1.8

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Al...-3.12-0.063.35
Fe...-3.06...4.44
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0185

Title The r-Process in the Early Galaxy
ADS J.A.Johnson et al.,ApJ, 579, 616, 2002
Authors J. A. Johnson, M. Bolte

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
1997-05-12 N/A KECKHIRES 45000 350 1800 N/A
1997-06-20 N/A KECKHIRES 45000 N/A 1800 N/A
1998-08-12 N/A LICKHAMILTON 60000 90 2700 N/A

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Fe...-3.04...4.46
Sr II...-4.17+-0.30-1.13+-0.30-1.20+-0.30
Y II...-4.05+-0.05-1.01+-0.05-1.81+-0.05
Zr II...-3.82+-0.09-0.78+-0.09-1.22+-0.09
Pd I...<-2.24<0.80<-0.55
Ba II...-3.80+-0.16-0.76+-0.16-1.67+-0.16
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0186

Title Th Ages for Metal-poor Stars
ADS J.A.Johnson et al.,ApJ, 554, 888, 2001
Authors J. A. Johnson, M. Bolte

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Atmospheric data

Teff 4600
log g 0.95
vturb 1.90

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Fe I...-3.05+-0.08...4.45+-0.08
Fe II...-3.06+-0.08...4.44+-0.08
Ba II...-3.80+-0.16-0.75+-0.16-1.67+-0.16
La II...-3.65+-0.14-0.60+-0.14-2.48+-0.14
Pr II...<-2.40<0.65<-1.69
Eu II...-3.30+-0.22-0.25+-0.22-2.79+-0.22
Tb II...<-2.58<0.47<-2.68
Dy II...-3.38+-0.20-0.33+-0.20-2.24+-0.20
Ho II...<-1.40<1.65<-1.14
Er II...-3.15+-0.12-0.10+-0.12-2.22+-0.12
Tm II...<-1.60<1.45<-1.60
Yb II...-3.87+-0.21-0.82+-0.21-2.79+-0.21
Hf II...<-1.90<1.15<-1.02
Os I...<-2.00<1.05<-0.55
Th II...<-3.10<-0.05<-3.10
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

Isotope ratio

12C/13C 32