HE2215-2548

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 : 5035+-100 log g : 2.1+-0.25 vturb : 1.8+-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
O I1...<1.47...<-1.30<1.76<7.39O I
Na I2...0.14+-0.04...-2.79+-0.040.27+-0.043.45+-0.04Na I
Mg I5...0.28+-0.09...-2.79+-0.090.27+-0.094.81+-0.09Mg I
Al I1...-0.5...-3.49-0.432.96Al I
Si I2...0.19+-0.34...-2.78+-0.340.28+-0.344.73+-0.34Si I
K I1...0.29...-2.630.432.40K I
Ca I11...0.1+-0.12...-2.89+-0.120.17+-0.123.45+-0.12Ca I
Sc II3...-0.41+-0.08...-3.47+-0.08-0.41+-0.08-0.32+-0.08Sc II
Ti I10...0.31+-0.09...-2.66+-0.090.40+-0.092.29+-0.09Ti I
Ti II20...0.31+-0.14...-2.66+-0.140.40+-0.142.29+-0.14Ti II
Cr I6...-0.45+-0.13...-3.43+-0.13-0.37+-0.132.21+-0.13Cr I
Mn I2...-1.51+-0.03...-4.56+-0.03-1.50+-0.030.87+-0.03Mn I
Fe IN/A-3.01+-0.14......-3.06+-0.14...4.44+-0.14Fe I
Fe II11-3.05+-0.14-0.04+-0.14...-3.10+-0.14-0.04+-0.144.40+-0.14Fe II
Co I2...0.68+-0.51...-2.40+-0.510.66+-0.512.59+-0.51Co I
Zn I1...0.47...-2.500.562.06Zn I
Sr II2...-1.53+-0.06...-4.51+-0.06-1.45+-0.06-1.64+-0.06Sr II
Ba II3...-0.66+-0.13...-3.72+-0.13-0.66+-0.13-1.54+-0.13Ba II
Eu II1...<1.94...<-1.08<1.98<-0.56Eu II

Binary Parameters

Vrad -61.1

Position

Right Ascension : 22 17 58.60 Declination : -25 33 23.0 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 -61.1