BPS CS22876-032A: found in 2 paper(s).

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/J.E.Norris et al.(2000)/ /J.I.GonzalezHernandez et al.(2008)/

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A0041

Title Extremely Metal-poor Stars. VII. The Most Metal-poor Dwarf, CS 22876-032
ADS J.E.Norris et al.,ApJ, 540, 456, 2000
Authors J. E. Norris, T. C. Beers, S. G. Ryan

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
1985-09-06 2446315.1 N/A N/A -83.9+-2.0
1985-12-16 2446416.0 N/A N/A -96.8+-2.0
1989-09-13 2447783.2 ANGLO 40000 N/A N/A -107.8+-1.0
1989-10-16 2447815.7 N/A N/A -103.1+-1.0
1989-12-06 2447867.0 ANGLO 40000 N/A N/A -93.3+-1.0
1990-09-27 2448162.1 ANGLO 40000 N/A N/A -109.6+-1.0
1991-08-22 2448490.5 ANGLO 40000 N/A N/A -87.0+-2.0
1992-08-17 2448851.8 N/A N/A -78.6+-1.0
1996-08-07 2450303.1 ANGLO 40000 N/A N/A -110.2+-1.0
1997-08-23 2450683.8 ANGLO 40000 N/A N/A -104.2+-1.0
1998-08-12 2451038.3 ANGLO 40000 N/A N/A -87.8+-1.0
1999-07-29 2451388.7 N/A N/A -77.0+-2.0
1999-09-23 2451444.6 ANGLO 40000 N/A N/A -84.3+-1.0
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Binarity

Binarity Positive
Vrad -93.36+-0.28
Period 424.71

Photometric data

B-V 0.360
V-R 0.258
R-I 0.287

Atmospheric data

Teff 6300
log g 4.5
vturb 1.4

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Mg I...-3.21+-0.120.50+-0.124.37+-0.12
Al I...-4.16+-0.12-0.45+-0.122.31+-0.12
Si I...-3.92+-0.13-0.21+-0.133.63+-0.13
Ca I...-3.70+-0.13+0.01+-0.132.66+-0.13
Sc II...<-3.44+-0.07<0.27+-0.07<-0.27+-0.07
Ti II...-3.63+-0.110.08+-0.111.39+-0.11
Cr I...<-3.93+-0.04<-0.22+-0.04<1.74+-0.04
Mn I...<-3.89+-0.04<-0.18+-0.04<1.50+-0.04
Fe I...-3.71...3.79
Co I...<-2.46+-0.04<1.25+-0.04<2.46+-0.04
Ni I...<-3.71+-0.04<0.00+-0.04<2.54+-0.04
Sr II...<-4.36+-0.05<-0.65+-0.05<-1.39+-0.05
Ba II...<-3.33+-0.07<0.38+-0.07<-1.20+-0.07
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)

A0178

Title First stars XI. Chemical composition of the extremely metal-poor dwarfs in the binary CS 22876-032
ADS J.I.GonzalezHernandez et al.,AAP, 480, 233, 2008
Authors J. I. GonzalezHernandez, P. Bonifacio, H. -G. Ludwig, E. Caffau, M. Spite, F. Spite, R. Cayrel, P. Molaro, V. Hill, P. Francois, B. Plez, T. C. Beers, T. Sivarani, J. Andersen, B. Barbuy, E. Depagne, B. Nordstrom, F. Primas

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Basic Informations

Observation Date JD Facility Resolution S/N Exposure Time Vrad
2000-10-17 HJD-2,400,000 VLT 43000 N/A N/A N/A
2000-10-20 HJD-2,400,000 VLT 43000 N/A N/A N/A
2000-7-19 HJD-2,400,000 VLT 43000 N/A N/A N/A
2000-7-20 HJD-2,400,000 VLT 43000 N/A N/A N/A
2000-8-03 HJD-2,400,000 VLT 43000 N/A N/A N/A
2000-8-11 HJD-2,400,000 VLT 43000 N/A N/A N/A
2001-11-07 HJD-2,400,000 VLT 43000 N/A N/A N/A
2001-11-08 HJD-2,400,000 VLT 43000 N/A N/A N/A
2001-11-09 HJD-2,400,000 VLT 43000 N/A N/A N/A
Galactic Longitude (l) N/A
Galactic Latitude (b) N/A
Declination N/A
Right Ascension N/A

Binarity

Binarity Positive
Vrad -93.11+-0.13
Period 424.81

Photometric data

V 12.84+-0.01
B-V 0.397+-0.02
U-B -0.255+-0.01
J 11.503+-0.035
K 11.800+-0.041
EB-V 0.00+-0.01

Atmospheric data

Teff 6500
log g 4.4
vturb 1.5

Chemical Abundances

Element Nline [X/H] [X/Fe] log-e
Li I...1.06+-0.014.72+-0.012.22+-0.01
O...-1.52+-0.042.14+-0.047.35+-0.04
Na I...-3.69+-0.03-0.03+-0.032.64+-0.03
Mg I...-3.11+-0.180.55+-0.184.47+-0.18
Al I...-3.89+-0.22-0.23+-0.222.58+-0.22
Si I...-3.75+-0.02-0.09+-0.023.80+-0.02
Ca I...-3.65+-0.020.01+-0.022.71+-0.02
Ca II...-3.68+-0.14-0.18+-0.142.68+-0.14
Sc II...-3.73+-0.18-0.22+-0.18-0.56+-0.18
Ti II...-3.25+-0.340.25+-0.341.77+-0.34
Cr I...-3.79+-0.12-0.13+-0.121.88+-0.12
Cr II...-3.38+-0.100.12+-0.102.29+-0.10
Mn II...-4.01+-0.17-0.51+-0.171.38+-0.17
Fe I...-3.66+-0.12...3.84+-0.12
Fe II...-3.51+-0.25...3.99+-0.25
Co I...-2.91+-0.070.75+-0.072.01+-0.07
Ni I...-3.49+-0.180.17+-0.182.76+-0.18
    : Data presented in the paper
    : Data converted with the solar abundance from Grevesse et al. (1996)