HE0142+0147

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 : 6250 log g : 3.7 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 I4......5.53+-0.16-2.07+-0.160.60+-0.165.53+-0.16Mg I
Al I2......3.72+-0.13-2.73+-0.13-0.06+-0.133.72+-0.13Al I
Si I1......5.16-2.350.325.16Si I
Ca I6......4.11+-0.13-2.23+-0.130.44+-0.134.11+-0.13Ca I
Ti I4......3.02+-0.16-1.93+-0.160.74+-0.163.02+-0.16Ti I
Ti II11......2.63+-0.09-2.32+-0.090.35+-0.092.63+-0.09Ti II
Cr I3......2.72+-0.09-2.92+-0.09-0.25+-0.092.72+-0.09Cr I
Mn I2......2.29+-0.14-3.14+-0.14-0.47+-0.142.29+-0.14Mn I
Fe I53......4.83+-0.14-2.67+-0.14...4.83+-0.14Fe I
Fe II6......4.77+-0.17-2.73+-0.17...4.77+-0.17Fe II
Co I3......2.90+-0.07-2.09+-0.070.58+-0.072.90+-0.07Co I
Ni I1......3.73-2.490.183.73Ni I
Sr II2......0.00+-0.00-2.87+-0.00-0.20+-0.000.00+-0.00Sr II
Ba II2......-0.81+-0.08-2.99+-0.08-0.32+-0.08-0.81+-0.08Ba II
La II1......<0.27<-0.83<1.84<0.27La II
Eu II1......<-0.87<-1.39<1.28<-0.87Eu II

Position

Right Ascension : 01 44 47.89 Declination : +02 02 17.7 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 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 : 6250+-100 log g : 3.7+-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 I4...0.5+-0.02...-2.18+-0.020.49+-0.025.42+-0.02Mg I
Al I2...-0.13+-0.13...-2.73+-0.13-0.06+-0.133.72+-0.13Al I
Si I1...0.18...-2.400.275.11Si I
Ca I6...0.37+-0.13...-2.23+-0.130.44+-0.134.11+-0.13Ca I
Ti I4...0.64+-0.16...-1.94+-0.160.73+-0.163.01+-0.16Ti I
Ti II11...0.26+-0.09...-2.32+-0.090.35+-0.092.63+-0.09Ti II
Cr I3...-0.34+-0.09...-2.93+-0.09-0.26+-0.092.71+-0.09Cr I
Mn I2...-0.49+-0.14...-3.15+-0.14-0.48+-0.142.28+-0.14Mn I
Fe IN/A-2.62+-0.14......-2.67+-0.14...4.83+-0.14Fe I
Fe II6-2.68+-0.17-0.06+-0.17...-2.73+-0.17-0.06+-0.174.77+-0.17Fe II
Co I3...0.6+-0.07...-2.09+-0.070.58+-0.072.90+-0.07Co I
Ni I1...0.09...-2.500.173.72Ni I
Sr II2...-0.28...-2.87-0.200.00Sr II
Ba II1...-0.39...-3.06-0.39-0.88Ba II
La II1...<1.75...<-0.83<1.84<0.27La II
Eu II1...<1.24...<-1.39<1.28<-0.87Eu II

Binary Parameters

Vrad -97.1

Position

Right Ascension : 01 44 47.89 Declination : +02 02 17.7 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 9600 -97.1