HE0102-0633

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 : 6350 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
Mg I2......5.05+-0.03-2.55+-0.030.40+-0.035.05+-0.03Mg I
Al I2......3.47+-0.12-2.98+-0.12-0.03+-0.123.47+-0.12Al I
Si I1......4.79-2.720.234.79Si I
Ca I5......3.89+-0.28-2.45+-0.280.50+-0.283.89+-0.28Ca I
Sc II1......0.33-2.820.130.33Sc II
Ti II7......2.31+-0.07-2.64+-0.070.31+-0.072.31+-0.07Ti II
V I1......<2.34<-1.59<1.36<2.34V I
Cr I3......2.53+-0.06-3.11+-0.06-0.16+-0.062.53+-0.06Cr I
Mn I2......1.86+-0.03-3.57+-0.03-0.62+-0.031.86+-0.03Mn I
Fe I36......4.55+-0.15-2.95+-0.15...4.55+-0.15Fe I
Fe II5......4.51+-0.26-2.99+-0.26...4.51+-0.26Fe II
Co I2......2.49+-0.03-2.50+-0.030.45+-0.032.49+-0.03Co I
Ni I1......3.48-2.740.213.48Ni I
Zn I1......<2.55<-2.01<0.94<2.55Zn I
Sr II2......-0.49+-0.09-3.36+-0.09-0.41+-0.09-0.49+-0.09Sr II
Y II1......<0.03<-2.18<0.77<0.03Y II
Ba II1......-0.82-3.00-0.05-0.82Ba II
Eu II1......<-0.54<-1.06<1.89<-0.54Eu II

Position

Right Ascension : 01 05 25.60 Declination : -06 17 36.0 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 10800 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 : 6012+-100 log g : 3.7+-0.25 vturb : 1.5+-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...0.87...-2.071.086.36CH
Na I1...<0.93...<-2.09<1.06<4.15Na I
Mg I4...0.45+-0.07...-2.71+-0.070.44+-0.074.89+-0.07Mg I
Al I1...-0.34...-3.42-0.273.03Al I
Si I1...0.23...-2.830.324.68Si I
Ca I5...0.39+-0.07...-2.69+-0.070.46+-0.073.65+-0.07Ca I
Sc II1...0.16...-2.990.160.16Sc II
Ti II7...0.2+-0.04...-2.86+-0.040.29+-0.042.09+-0.04Ti II
Cr I3...-0.29+-0.07...-3.36+-0.07-0.21+-0.072.28+-0.07Cr I
Mn I2...-0.74+-0.09...-3.88+-0.09-0.73+-0.091.55+-0.09Mn I
Fe IN/A-3.1+-0.11......-3.15+-0.11...4.35+-0.11Fe I
Fe II5-3.05+-0.140.05+-0.14...-3.10+-0.140.05+-0.144.40+-0.14Fe II
Co I2...0.46+-0.01...-2.71+-0.010.44+-0.012.28+-0.01Co I
Ni I1...0.13...-2.940.213.28Ni I
Zn I1...<1.03...<-2.03<1.12<2.53Zn I
Sr II2...-0.58+-0.02...-3.65+-0.02-0.50+-0.02-0.78+-0.02Sr II
Y II1...<0.71...<-2.36<0.79<-0.15Y II
Ba II1...<-0.54...<-3.69<-0.54<-1.51Ba II
Eu II1...<1.63...<-1.48<1.67<-0.96Eu II

Binary Parameters

Vrad 1.6

Position

Right Ascension : 01 05 25.60 Declination : -06 17 36.0 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 4800 3.8
2012-01 N/A KECKHIRES 36000 >150 8400 1.6