CS22873-139B

taken from 1 paper(s):

/M.Spite et al.(2000)/

M.Spite et al.,AAP, 360, 1077, 2000(ADS)

Element abundance ratios in an extremely metal-poor binary star: CS 22873-139


Stellar Parameters

Teff : 5750 log g : 4.5 vturb : 1.3

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 IN/A-3.93...2.40-3.84-0.472.40Na I
Mg IN/A-3.41...4.17-3.43-0.064.17Mg I
Al IN/A-4.17...2.30-4.15-0.782.30Al I
Ca IN/A-3.36...3.15-3.190.183.15Ca I
Ti IIN/A-2.85...2.17-2.780.592.17Ti II
Fe IN/A-3.37...4.13-3.37...4.13Fe I
Fe IIN/A-3.40...4.13-3.37...4.13Fe II
Sr IIN/A<-4.47...<-1.50<-4.37<-1.00<-1.50Sr II

Binary Parameters

Binarity Positive
Vrad 235.26+-0.39
Period 19.166

Position

Right Ascension : 20 05 55.15 Declination : -59 17 11.4 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
1997-10-18 2450739.6 EMMIESO 50000 110 120min 213.8
1997-10-20 2450741.6 EMMIESO 50000 120 120min 201.5
1998-10-11 2451097.6 CASPECESO 16000 100 120min 258.3
1998-10-12 2451098.6 CASPECESO 16000 100 120min 253.0
1999-07-21 2451380.7 FEROSESO 35 90min 256.1
1999-08-01 2451391.7 FEROSESO 40 90min 212.5
1999-08-11 2451401.7 EMMIESO 50000 130 180min 259.2