CS22876-032

  • CS22876-032A in J.E.Norris+,ApJ, 540, 456, 2000

    • taken from 3 paper(s):

    /J.E.Norris et al.(2000)/ /J.I.GonzalezHernandez et al.(2008)/ /K.A.Venn et al.(2004)/

    J.E.Norris et al.,ApJ, 540, 456, 2000(ADS)

    Extremely Metal-poor Stars. VII. The Most Metal-poor Dwarf, CS 22876-032


    Stellar Parameters

    Teff : 6300 log g : 4.5 vturb : 1.4

    Chemical Abundances

    Original Data Converted Data Asplund et al. (2009)
    Element Nline [X/H] [X/Fe] log-e [X/H] [X/Fe] log-e Element
    Mg IN/A...0.50+-0.12...-3.23+-0.120.31+-0.124.37+-0.12Mg I
    Al IN/A...-0.45+-0.12...-4.14+-0.12-0.60+-0.122.31+-0.12Al I
    Si IN/A...-0.21+-0.13...-3.88+-0.13-0.34+-0.133.63+-0.13Si I
    Ca IN/A...+0.01+-0.13...-3.68+-0.13-0.14+-0.132.66+-0.13Ca I
    Sc IIN/A...<0.27+-0.07...<-3.50+-0.07<0.04+-0.07<-0.35+-0.07Sc II
    Ti IIN/A...0.08+-0.11...-3.59+-0.11-0.05+-0.111.36+-0.11Ti II
    Cr IN/A...<-0.22+-0.04...<-3.90+-0.04<-0.36+-0.04<1.74+-0.04Cr I
    Mn IN/A...<-0.18+-0.04...<-3.93+-0.04<-0.39+-0.04<1.50+-0.04Mn I
    Fe IN/A-3.71......-3.54...3.96Fe I
    Co IN/A...<1.25+-0.04...<-2.53+-0.04<1.01+-0.04<2.46+-0.04Co I
    Ni IN/A...<0.00+-0.04...<-3.68+-0.04<-0.14+-0.04<2.54+-0.04Ni I
    Sr IIN/A...<-0.65+-0.05...<-4.33+-0.05<-0.79+-0.05<-1.46+-0.05Sr II
    Ba IIN/A...<0.38+-0.07...<-3.38+-0.07<0.16+-0.07<-1.20+-0.07Ba II

    Binary Parameters

    Binarity Positive
    Vrad -93.36+-0.28

    Position

    Right Ascension : 00 07 37.50 Declination : -35 31 17.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

    Observing Log

    Date of Observation 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

    J.I.GonzalezHernandez et al.,AAP, 480, 233, 2008(ADS)

    First stars XI. Chemical composition of the extremely metal-poor dwarfs in the binary CS 22876-032


    Stellar Parameters

    Teff : 6500 log g : 4.4 vturb : 1.5

    Chemical Abundances

    Original Data Converted Data Asplund et al. (2009)
    Element Nline [X/H] [X/Fe] log-e [X/H] [X/Fe] log-e Element
    Li I1......2.22+-0.01-1.04+-0.012.62+-0.012.22+-0.01Li I
    O4-1.52+-0.042.14+-0.04...-1.49+-0.042.17+-0.047.20+-0.04O
    Na I2-3.69+-0.03-0.03+-0.03...-3.60+-0.030.06+-0.032.64+-0.03Na I
    Mg I9-3.11+-0.180.55+-0.18...-3.13+-0.180.53+-0.184.47+-0.18Mg I
    Al I2-3.89+-0.22-0.23+-0.22...-3.87+-0.22-0.21+-0.222.58+-0.22Al I
    Si I1-3.75+-0.02-0.09+-0.02...-3.71+-0.02-0.05+-0.023.80+-0.02Si I
    Ca I1-3.65+-0.020.01+-0.02...-3.63+-0.020.03+-0.022.71+-0.02Ca I
    Ca II3-3.68+-0.14-0.18+-0.14...-3.66+-0.140.00+-0.142.68+-0.14Ca II
    Sc II2-3.73+-0.18-0.22+-0.18...-3.71+-0.18-0.05+-0.18-0.56+-0.18Sc II
    Ti II19-3.25+-0.340.25+-0.34...-3.18+-0.340.48+-0.341.77+-0.34Ti II
    Cr I5-3.79+-0.12-0.13+-0.12...-3.76+-0.12-0.10+-0.121.88+-0.12Cr I
    Cr II1-3.38+-0.100.12+-0.10...-3.35+-0.100.31+-0.102.29+-0.10Cr II
    Mn II1-4.01+-0.17-0.51+-0.17...-4.05+-0.17-0.39+-0.171.38+-0.17Mn II
    Fe I38-3.66+-0.12......-3.66+-0.12...3.84+-0.12Fe I
    Fe II13-3.51+-0.25......-3.51+-0.25...3.99+-0.25Fe II
    Co I7-2.91+-0.070.75+-0.07...-2.98+-0.070.68+-0.072.01+-0.07Co I
    Ni I12-3.49+-0.180.17+-0.18...-3.46+-0.180.20+-0.182.76+-0.18Ni I

    Binary Parameters

    Binarity Positive
    Vrad -93.11+-0.13

    Position

    Right Ascension : 00 07 37.50 Declination : -35 31 17.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

    Observing Log

    Date of Observation 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

    K.A.Venn et al.,AJ, 128, 1177, 2004(ADS)

    Stellar Chemical Signatures and Hierarchical Galaxy Formation


    Chemical Abundances

    Original Data Converted Data Asplund et al. (2009)
    Element Nline [X/H] [X/Fe] log-e [X/H] [X/Fe] log-e Element
    MgN/A...0.69...-3.180.674.42Mg
    CaN/A...0.1...-3.730.122.61Ca
    FeN/A-3.85......-3.85...3.65Fe
    NiN/A...0.21...-3.610.242.61Ni

    Position

    Right Ascension : 00 07 37.50 Declination : -35 31 17.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

    Observing Log