A0061

Bibliography Data

Title Element abundance ratios in an extremely metal-poor binary star: CS 22873-139
ADS M.Spite et al.,AAP, 360, 1077, 2000
Authors M. Spite, E. Depagne, B. Nordstrom, V. Hill, R. Cayrel, F. Spite, T. C. Beers

Milky Way

List of objects (2 stars)

S: Find this object in SIMBAD
O: Find this object in Other papers

Name Comment SIMBAD Object
BPS CS22873-139A N/A S O
BPS CS22873-139B N/A S O

CS22873-139A

Stellar Parameters

Teff : 6300 log g : 4.2 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 254.8
1997-10-20 2450741.6 EMMIESO 50000 120 120min 263.1
1998-10-11 2451097.6 CASPECESO 16000 100 120min 220.6
1998-10-12 2451098.6 CASPECESO 16000 100 120min 224.3
1999-07-21 2451380.7 FEROSESO 35 90min 215.3
1999-08-01 2451391.7 FEROSESO 40 90min 257.4
1999-08-11 2451401.7 EMMIESO 50000 130 180min 212.2

CS22873-139B

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