HE2251-0821

taken from 1 paper(s):

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

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 : 5160+-100 log g : 2.5+-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...1.76...-0.991.977.44CH
O I2...<1.45+-0.24...<-1.22+-0.24<1.74+-0.24<7.47+-0.24O I
Na I3...1.03+-0.15...-1.80+-0.151.16+-0.154.44+-0.15Na I
Mg I5...0.55+-0.13...-2.42+-0.130.54+-0.135.18+-0.13Mg I
Al I1...0.37...-2.520.443.93Al I
Si I2...1.47+-0.38...-1.40+-0.381.56+-0.386.11+-0.38Si I
K I1...0.61...-2.210.752.82K I
Ca I10...0.36+-0.19...-2.53+-0.190.43+-0.193.81+-0.19Ca I
Sc II5...0.39+-0.2...-2.57+-0.20.39+-0.20.58+-0.2Sc II
Ti I9...0.41+-0.13...-2.46+-0.130.50+-0.132.49+-0.13Ti I
Ti II12...0.38+-0.13...-2.49+-0.130.47+-0.132.46+-0.13Ti II
Cr I5...-0.11+-0.08...-2.99+-0.08-0.03+-0.082.65+-0.08Cr I
Mn I6...-0.1+-0.13...-3.05+-0.13-0.09+-0.132.38+-0.13Mn I
Fe IN/A-2.91+-0.1......-2.96+-0.1...4.54+-0.1Fe I
Fe II10-2.78+-0.210.13+-0.21...-2.83+-0.210.13+-0.214.67+-0.21Fe II
Zn I1...0.34...-2.530.432.03Zn I
Sr II1...0.73...-2.150.810.72Sr II
Y II6...0.85+-0.15...-2.03+-0.150.93+-0.150.18+-0.15Y II
Ba II5...1.75+-0.11...-1.21+-0.111.75+-0.110.97+-0.11Ba II
La II4...1.59+-0.12...-1.28+-0.121.68+-0.12-0.18+-0.12La II
Ce II7...1.67+-0.17...-1.27+-0.171.69+-0.170.31+-0.17Ce II
Pr II1...<2.12...<-0.80<2.16<-0.08Pr II
Nd II10...1.39+-0.12...-1.44+-0.121.52+-0.12-0.02+-0.12Nd II

Binary Parameters

Vrad 48.4

Position

Right Ascension : 22 54 08.20 Declination : -08 05 45.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2007-09 N/A KECKHIRES 36000 90 5400 48.4