HE0007-1832

taken from 3 paper(s):

/J.G.Cohen et al.(2004)/ /J.G.Cohen et al.(2006)/ /J.G.Cohen et al.(2013)/


J.G.Cohen et al.,ApJ, 612, 1107, 2004(ADS)

Abundances In Very Metal-Poor Dwarf Stars


Stellar Parameters

Teff : 6515 log g : 3.8 vturb : 1.7

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
CH1......8.29-0.142.568.29CH
CN1......7.00-0.831.877.00CN
Mg I5......5.65+-0.35-1.95+-0.350.75+-0.355.65+-0.35Mg I
Al I1......3.28-3.17-0.473.28Al I
Si I1......5.06-2.450.255.06Si I
Ca I1......4.03-2.310.394.03Ca I
Sc II3......0.90+-0.01-2.25+-0.010.45+-0.010.90+-0.01Sc II
Ti I3......3.04+-0.07-1.91+-0.070.79+-0.073.04+-0.07Ti I
Ti II9......2.73+-0.15-2.22+-0.150.48+-0.152.73+-0.15Ti II
Cr I4......3.07+-0.09-2.57+-0.090.13+-0.093.07+-0.09Cr I
Mn I2......2.51+-0.03-2.92+-0.03-0.22+-0.032.51+-0.03Mn I
Fe I19......4.80+-0.19-2.70+-0.19...4.80+-0.19Fe I
Fe II3......4.88+-0.21-2.62+-0.21...4.88+-0.21Fe II
Co I1......2.95-2.040.662.95Co I
Ni I1......3.62-2.600.103.62Ni I
Sr II1......0.39-2.480.220.39Sr II
Ba II1......-0.36-2.540.16-0.36Ba II
La II1......<0.30<-0.80<1.90<0.30La II
Nd II1......<0.70<-0.72<1.98<0.70Nd II
Eu II1......<-0.35<-0.87<1.83<-0.35Eu II
Pb I1......<2.34<0.30<3.00<2.34Pb I

Isotopic Ratio

12C/13C 7.5+-1.5

Position

Right Ascension : 00 09 52.80 Declination : -18 16 12.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-09 N/A KECKHIRES 45000 90 8400 N/A

J.G.Cohen et al.,AJ, 132, 137, 2006(ADS)

Carbon Stars in the Hamburg/ESO Survey: Abundances


Position

Right Ascension : 00 09 52.80 Declination : -18 16 12.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log


J.G.Cohen et al.,ApJ, 778, 56, 2013(ADS)

Normal and Outlying Populations of the Milky Way Stellar Halo at [Fe/H] <-2


Stellar Parameters

Teff : 6500+-100 log g : 3.8+-0.25 vturb : 1.7+-0.2

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
CHN/A...2.66...0.032.878.46CH
NH1...2.11...-0.582.267.25NH
Mg I4...0.57+-0.16...-2.28+-0.160.56+-0.165.32+-0.16Mg I
Al I1...-0.05...-2.820.023.63Al I
Ca I1...0.37...-2.400.443.94Ca I
Ti II9...0.29+-0.14...-2.46+-0.140.38+-0.142.49+-0.14Ti II
Mn I2...-0.17+-0.02...-3.00+-0.02-0.16+-0.022.43+-0.02Mn I
Fe IN/A-2.79+-0.16......-2.84+-0.16...4.66+-0.16Fe I
Fe II3-2.81+-0.21-0.02+-0.21...-2.86+-0.21-0.02+-0.214.64+-0.21Fe II
Ni I1...0.06...-2.700.143.52Ni I
Sr II1...-0.02...-2.780.060.09Sr II
Ba II1...0.09...-2.750.09-0.57Ba II
Eu II1...<1.71...<-1.09<1.75<-0.57Eu II

Binary Parameters

Vrad 26.4

Position

Right Ascension : 00 09 52.80 Declination : -18 16 12.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-09 N/A KECKHIRES 36000 90 8400 26.4