HE0257-1837

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 : 6000+-100 log g : 3.8+-0.25 vturb : 1.4+-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
Na I2...-0.3+-0.05...-3.20+-0.05-0.17+-0.053.04+-0.05Na I
Mg I6...0.41+-0.14...-2.63+-0.140.40+-0.144.97+-0.14Mg I
Al I1...-0.35...-3.31-0.283.14Al I
Si I1...0.04...-2.900.134.61Si I
Ca I4...0.29+-0.13...-2.67+-0.130.36+-0.133.67+-0.13Ca I
Ca II1...0.1...-2.860.173.48Ca II
Sc II1...0.00...-3.03-0.000.12Sc II
Ti I2...<0.56+-0.19...<-2.38+-0.19<0.65+-0.19<2.57+-0.19Ti I
Ti II13...0.18+-0.12...-2.76+-0.120.27+-0.122.19+-0.12Ti II
Cr I5...-0.21+-0.15...-3.16+-0.15-0.13+-0.152.48+-0.15Cr I
Mn I2...-0.78+-0.03...-3.80+-0.03-0.77+-0.031.63+-0.03Mn I
Mn II2...-0.5+-0.03...-3.52+-0.03-0.49+-0.031.91+-0.03Mn II
Fe IN/A-2.98+-0.11......-3.03+-0.11...4.47+-0.11Fe I
Fe II8-3+-0.25-0.02+-0.25...-3.05+-0.25-0.02+-0.254.45+-0.25Fe II
Co I2...0.25+-0.14...-2.80+-0.140.23+-0.142.19+-0.14Co I
Ni I2...-0.32+-0.03...-3.27+-0.03-0.24+-0.032.95+-0.03Ni I
Cu I1...-0.67...-3.63-0.600.56Cu I
Sr II2...-0.51+-0.22...-3.46+-0.22-0.43+-0.22-0.59+-0.22Sr II
Ba II1...-0.57...-3.60-0.57-1.42Ba II

Binary Parameters

Vrad -111.4

Position

Right Ascension : 02 59 28.20 Declination : -18 26 04.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2004-10 N/A MIKELCO 42000 57 6865 -1164
2005-09 N/A KECKHIRES 36000 90 3600 -111.4