BS17570-090

taken from 2 paper(s):

/D.K.Lai et al.(2004)/ /D.K.Lai et al.(2007)/


D.K.Lai et al.,AJ, 128, 2402, 2004(ADS)

ABUNDANCES OF EXTREMELY METAL-POOR STAR CANDIDATES


Stellar Parameters

Teff : 5924 log g : 3.66

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...-0.19...-2.81-0.214.79Mg I
Ti IIN/A...-0.01...-2.540.062.41Ti II
Fe IN/A-2.60......-2.60...4.90Fe I
Ba IIN/A...<-1.72...<-4.37<-1.77<-2.19Ba II

Binary Parameters

Vrad -232

Position

Right Ascension : 00 25 43.77 Declination : +23 05 36.6 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-01-21 N/A KECKII 7000 150 600 N/A

D.K.Lai et al.,ApJ, 667, 1185, 2007(ADS)

Carbon and Strontium Abundances of Metal-poor Stars


Stellar Parameters

Teff : 5924 log g : 3.66

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
CN/A...<0.30...<-2.17<0.26<6.26C
FeN/A-2.60......-2.43...5.07Fe
SrN/A...-0.80...-3.37-0.94-0.50Sr
BaN/A...<-1.72...<-4.37<-1.94<-2.19Ba

Position

Right Ascension : 00 25 43.77 Declination : +23 05 36.6 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
N/A KECKII 7000 N/A N/A N/A