G77-61

taken from 2 paper(s):

/B.Plez and J. G. Cohen(2005)/ /T.C.Beers et al.(2007)/


B.Plez et al.,AAP, 434, 1117, 2005(ADS)

Analysis of the carbon-rich very metal-poor dwarf G77-61


Stellar Parameters

Teff : 4000+-200 log g : 5.05

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
Li I1<0<4...<0.05<4.13<3.31Li I
CN/A-1.4+-0.1+2.6+-0.1...-1.42+-0.12.66+-0.17.01+-0.1C
CNN/A-1.4+-0.1+2.6+-0.1...-1.43+-0.12.65+-0.16.40+-0.1CN
Na I1-3.4+-0.2+0.60+-0.2...-3.31+-0.20.77+-0.22.93+-0.2Na I
Mg I2-3.5+-0.2+0.49+-0.2...-3.52+-0.20.56+-0.24.08+-0.2Mg I
K I2-2.8+-0.3+1.21+-0.3...-2.71+-0.31.37+-0.32.32+-0.3K I
Ca I1-3.7+-0.2+0.37+-0.2...-3.68+-0.20.40+-0.22.66+-0.2Ca I
Ca II3-3.5+-0.2+0.57+-0.2...-3.48+-0.20.60+-0.22.86+-0.2Ca II
Cr I2-3.7+-0.2+0.36+-0.2...-3.67+-0.20.41+-0.21.97+-0.2Cr I
Mn I1-4.1+-0.3-0.06+-0.3...-4.14+-0.3-0.06+-0.31.29+-0.3Mn I
Fe I6-4.03+-0.15......-4.08+-0.15...3.42+-0.15Fe I
Zn I1...<2.7...<-1.29<2.79<3.27Zn I
Sr II1...<0...<-3.93<0.15<-1.06Sr II
Ba II2...<1...<-3.08<1.00<-0.90Ba II
Eu II2...<3...<-1.04<3.04<-0.52Eu II

Isotopic Ratio

12C/13C 5+-1

Binary Parameters

Binarity Positive
Vrad -20
Period 245

Position

Right Ascension : 03 32 38.08 Declination : +01 58 00.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2002-09-29 N/A KECKHIRES 34000 N/A N/A -29
2003-08-19 N/A KECKHIRES 34000 N/A N/A -20

T.C.Beers et al.,AJ, 133, 1193, 2007(ADS)

NEAR-INFRARED SPECTROSCOPY OF CARBON-ENHANCED METAL-POOR STARS. I. A SOAR /OSIRIS PILOT STUDY


Stellar Parameters

Teff : 4000 log g : 5.1

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
CN/A...+3.2+-0.35...-0.84+-0.353.21+-0.357.59+-0.35C
NN/A...+2.2+-0.46...-1.85+-0.462.20+-0.465.98+-0.46N
ON/A...+1.8+-0.22...-2.23+-0.221.82+-0.226.46+-0.22O
FeN/A-4.0......-4.05...3.45Fe
BaN/A...<+0.5+-0.5...<-3.51+-0.5<0.54+-0.5<-1.33+-0.5Ba

Isotopic Ratio

12C/13C 5+-2

Position

Right Ascension : 03 32 38.08 Declination : +01 58 00.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2005-12-27 N/A SOAROSIRIS 3000 55 4800 N/A