HE0028-2152

taken from 2 paper(s):

/J.G.Cohen et al.(2004)/ /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 : 6150 log g : 3.6 vturb : 1.6

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 I5......5.42+-0.23-2.18+-0.230.59+-0.235.42+-0.23Mg I
Al I2......3.57+-0.12-2.88+-0.12-0.11+-0.123.57+-0.12Al I
Si I1......4.89-2.620.154.89Si I
Ca I7......4.01+-0.14-2.33+-0.140.44+-0.144.01+-0.14Ca I
Sc II3......0.52+-0.08-2.63+-0.080.14+-0.080.52+-0.08Sc II
Ti I4......2.87+-0.08-2.08+-0.080.69+-0.082.87+-0.08Ti I
Ti II14......2.62+-0.10-2.33+-0.100.44+-0.102.62+-0.10Ti II
V I1......<2.30<-1.63<1.14<2.30V I
Cr I4......2.74+-0.10-2.90+-0.10-0.13+-0.102.74+-0.10Cr I
Mn I2......2.03+-0.15-3.40+-0.15-0.63+-0.152.03+-0.15Mn I
Fe I55......4.73+-0.17-2.77+-0.17...4.73+-0.17Fe I
Fe II6......4.67+-0.16-2.83+-0.16...4.67+-0.16Fe II
Co I3......2.59+-0.13-2.40+-0.130.37+-0.132.59+-0.13Co I
Ni I1......3.52-2.700.073.52Ni I
Zn I1......<2.47<-2.09<0.68<2.47Zn I
Sr II2......-0.27+-0.07-3.14+-0.07-0.37+-0.07-0.27+-0.07Sr II
Y II1......-0.14-2.350.42-0.14Y II
Ba II2......-1.18+-0.04-3.36+-0.04-0.59+-0.04-1.18+-0.04Ba II
Eu II1......<-0.85<-1.37<1.40<-0.85Eu II

Position

Right Ascension : 00 31 07.70 Declination : -21 36 07.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2002-09 N/A KECKHIRES 34000 100 9600 N/A

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 : 6150+-100 log g : 3.6+-0.25 vturb : 1.6+-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
Mg I5...0.49+-0.07...-2.29+-0.070.48+-0.075.31+-0.07Mg I
Al I2...-0.18+-0.12...-2.88+-0.12-0.11+-0.123.57+-0.12Al I
Si I1...0.05...-2.630.144.88Si I
Ca I7...0.37+-0.14...-2.33+-0.140.44+-0.144.01+-0.14Ca I
Sc II3...0.14+-0.08...-2.63+-0.080.14+-0.080.52+-0.08Sc II
Ti I4...0.59+-0.08...-2.09+-0.080.68+-0.082.86+-0.08Ti I
Ti II14...0.35+-0.1...-2.33+-0.10.44+-0.12.62+-0.1Ti II
V I1...<1.01...<-1.64<1.13<2.29V I
Cr I4...-0.21+-0.1...-2.90+-0.1-0.13+-0.12.74+-0.1Cr I
Mn I2...-0.64+-0.15...-3.40+-0.15-0.63+-0.152.03+-0.15Mn I
Fe IN/A-2.72+-0.15......-2.77+-0.15...4.73+-0.15Fe I
Fe II6-2.79+-0.16-0.07+-0.16...-2.84+-0.16-0.07+-0.164.66+-0.16Fe II
Co I3...0.39+-0.13...-2.40+-0.130.37+-0.132.59+-0.13Co I
Ni I1...-0.01...-2.700.073.52Ni I
Zn I1...<0.58...<-2.10<0.67<2.46Zn I
Sr II2...-0.45+-0.07...-3.14+-0.07-0.37+-0.07-0.27+-0.07Sr II
Y II1...0.33...-2.360.41-0.15Y II
Ba II1...-0.56...-3.33-0.56-1.15Ba II
Eu II1...<1.36...<-1.37<1.40<-0.85Eu II

Binary Parameters

Vrad 162.5

Position

Right Ascension : 00 31 07.70 Declination : -21 36 07.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2002-09 N/A KECKHIRES 36000 130 9600 162.5