HE0024-2523: found in 4 paper(s).

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/S.Lucatello et al.(2003)/ /E.Carretta et al.(2002)/ /J.G.Cohen et al.(2002)/ /J.G.Cohen et al.(2004)/

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A0004

Title STELLAR ARCHAEOLOGY: A KECK PILOT PROGRAM ON EXTREMELY METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. III. THE LEAD (Pb) STAR HE 0024-2523
ADS S.Lucatello et al.,AJ, 125, 875, 2003
Authors S. Lucatello, R. Gratton, J. G. Cohen, T. C. Beers, N. Christlieb, E. Carretta, S. Ramirez

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2000-09-24 2451811.386 KECKHIRES 45000 40 1200 -185.0+-0.4
2000-09-24 2451811.397 KECKHIRES 45000 40 1200 -183.6+-0.8
2000-09-24 2451811.412 KECKHIRES 45000 40 1200 -186.6+-0.7
2000-09-24 2451811.427 KECKHIRES 45000 40 1200 -187.4+-1.1
2000-09-24 2451811.442 KECKHIRES 45000 40 1200 -189.6+-0.3
2001-08-27 2452148.352 VLT 50000 80 3600 -127.0+-0.5
2001-09-27 2452179.398 KECKHIRES 45000 40 1200 -135.8+-1.1
2001-09-30 2452182.365 KECKHIRES 45000 40 1200 -125.6+-1.2
2001-10-23 2452205.017 VLT 50000 30 600 -218.2+-0.7
2001-10-23 2452206.014 VLT 50000 40 1800 -136.2+-0.4
2001-10-25 2452207.010 VLT 50000 20 600 -160.8+-0.6
2001-10-25 2452207.241 HALE 3500 30 400 -186.2+-5.0
2001-10-26 2452208.161 VLT 50000 35 1800 -228.6+-0.5
2001-10-26 2452208.251 HALE 3500 30 400 -227.8+-5.0
2001-10-27 2452209.218 HALE 3500 30 400 -145.6+-5.0
2001-10-28 2452210.021 VLT 50000 20 600 -133.9+-0.8
2001-10-28 2452210.216 HALE 3500 30 400 -140.1+-5.0
2001-10-28 2452210.255 VLT 50000 20 600 -148.2+-0.9
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Binarity

Binarity Positive
Vrad -185.0
Period 3.14

Photometric data

V 14.91

Atmospheric data

Teff 6625
log g 4.3
vturb 1.4

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Li...0.34+-0.13.06+-0.11.5+-0.1
CH...-0.12+-0.12.6+-0.18.43+-0.1
CN...-0.62+-0.12.1+-0.17.35+-0.1
O I...-2.320.406.55
Na I...-2.89+-0.13-0.17+-0.133.44+-0.13
Mg I...-1.99+-0.060.73+-0.065.59+-0.06
Al I...-3.07-0.353.40
Si I...-2.380.345.17
Ca I...-2.06+-0.170.66+-0.174.30+-0.17
Sc II...-2.35+-0.140.37+-0.140.82+-0.14
Ti I...-1.87+-0.100.85+-0.103.15+-0.10
Ti II...-2.57+-0.050.15+-0.052.45+-0.05
Cr I...-3.13+-0.15-0.41+-0.152.54+-0.15
Mn I...-2.98+-0.06-0.26+-0.062.41+-0.06
Fe I...-2.72+-0.12...4.78+-0.12
Fe II...-2.67+-0.14...4.83+-0.14
Sr II...-2.38+-0.240.34+-0.240.59+-0.24
Y II...<-1.81<0.91<0.43
Zr II...<-1.50<1.22<1.10
Ba II...-1.26+-0.201.46+-0.200.87+-0.20
La I...-0.92+-0.21.8+-0.20.25+-0.2
Eu I...<-1.62+-0.1<1.1+-0.1<-1.11+-0.1
Pb I...0.58+-0.13.3+-0.12.53+-0.1
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

Isotope ratio

12C/13C 6+-1

A0028

Title STELLAR ARCHAEOLOGY: A KECK PILOT PROGRAM ON EXTREMELY METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. II. ABUNDANCE ANALYSIS
ADS E.Carretta et al.,AJ, 124, 481, 2002
Authors E. Carretta, R. Gratton, J. G. Palomar O. Cohen, T. C. Department of Physics and Astronomy, MSU. Beers, N. Christlieb

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2000-09 N/A KECKHIRES 45000 N/A N/A

Photometric data

V 14.91

Atmospheric data

Teff 6625
log g 4.30
vturb 0.58

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Mg I...-2.02+-0.140.60+-0.145.56+-0.14
Al I...-3.00-0.383.47
Ca I...-2.03+-0.170.59+-0.174.33+-0.17
Sc II...-2.29+-0.130.33+-0.130.88+-0.13
Ti I...-2.10+-0.140.52+-0.142.92+-0.14
Ti II...-2.43+-0.080.19+-0.082.59+-0.08
Cr I...-3.14-0.522.53
Fe I...-2.62+-0.19...4.88+-0.19
Fe II...-2.57+-0.04...4.93+-0.04
Sr II...-2.12+-0.040.50+-0.040.85+-0.04
Ba II...-0.881.741.25
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)


A0029

Title STELLAR ARCHAEOLOGY: A KECK PILOT PROGRAM ON EXTREMELY METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. I. STELLAR PARAMETERS
ADS J.G.Cohen et al.,AJ, 124, 470, 2002
Authors J. G. Palomar O. Cohen, N. Christlieb, T. C. Department of Physics and Astronomy, MSU. Beers, R. Gratton, E. Carretta

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2000-09 N/A KECKHIRES 45000 98 6000
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination -250626
Right Ascension 002727.6

Binarity

Vrad -181.6

Photometric data

V 14.913
B-V 0.408
U-B -0.254
J 14.067
K 13.740
EB-V 0.017

Atmospheric data

Teff 6625
log g 4.3

A0036

Title Abundances In Very Metal-Poor Dwarf Stars
ADS J.G.Cohen et al.,ApJ, 612, 1107, 2004
Authors J. G. Cohen, N. Christlieb, A. McWilliam, S. Shectman, I. Thompson, G. J. Wasserburg, I. Ivans, M. Dehn, T. Karlsson, J. Melendez

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Basic Informations

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

Binarity

Binarity Positive

Photometric data

V 14.91

Atmospheric data

Teff 6625
log g 4.3
vturb 1.4

Isotope ratio

12C/13C 7.5+-1.5