HE0107-5240

taken from 3 paper(s):

/N.Christlieb et al.(2004)/ /M.S.Bessell et al.(2004)/ /A.Arentsen et al.(2019)/

N.Christlieb et al.,ApJ, 603, 708, 2004(ADS)

HE 0107-5240, A CHEMICALLY ANCIENT STAR. I. A DETAILED ABUNDANCE ANALYSIS


Stellar Parameters

Teff : 5100+-150 log g : 2.2+-0.3 vturb : 2.2+-0.5

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 I2<0.02<5.3<1.12<-2.14<3.30<1.12Li I
CHN/A-1.58+-0.34+3.70+-0.346.81+-0.34-1.62+-0.343.82+-0.346.81+-0.34CH
C2N/A-1.28+-0.24+4.00+-0.247.11+-0.24-1.32+-0.244.12+-0.247.11+-0.24C2
CNN/A-3.00+-0.17+2.28+-0.174.93+-0.17-2.90+-0.172.54+-0.174.93+-0.17CN
Na I2-4.47+-0.15+0.81+-0.151.86+-0.15-4.38+-0.151.06+-0.151.86+-0.15Na I
Mg I2-5.13+-0.14+0.15+-0.142.41+-0.14-5.19+-0.140.25+-0.142.41+-0.14Mg I
Al I1<-5.54+-0.18<-0.26+-0.18<0.93+-0.18<-5.52+-0.18<-0.08+-0.18<0.93+-0.18Al I
Si I1<-4.96+-0.17<+0.32+-0.17<2.55+-0.17<-4.96+-0.17<0.48+-0.17<2.55+-0.17Si I
S I1<-0.22<+5.06<7.11<-0.01<5.43<7.11S I
Ca I1-5.37+-0.16-0.09+-0.160.99+-0.16-5.35+-0.160.09+-0.160.99+-0.16Ca I
Ca II2-4.92+-0.190.36+-0.191.44+-0.19-4.90+-0.190.54+-0.191.44+-0.19Ca II
Sc II1<-4.67+-0.17<+0.61+-0.17<-1.50+-0.17<-4.65+-0.17<0.79+-0.17<-1.50+-0.17Sc II
Ti II5-5.642+-0.15-0.362+-0.15-0.62+-0.15-5.57+-0.15-0.13+-0.15-0.62+-0.15Ti II
Cr I1<-5.02+-0.21<+0.26+-0.21<0.65+-0.21<-4.99+-0.21<0.45+-0.21<0.65+-0.21Cr I
Mn I1<-4.92+-0.24<+0.36+-0.24<0.47+-0.24<-4.96+-0.24<0.48+-0.24<0.47+-0.24Mn I
Fe I25-5.39+-0.20...2.06+-0.20-5.44+-0.20...2.06+-0.20Fe I
Fe II1<-4.452+-0.15...<3.00+-0.15<-4.50+-0.15...<3.00+-0.15Fe II
Co I1<-4.06+-0.22<+1.22+-0.22<0.86+-0.22<-4.13+-0.22<1.31+-0.22<0.86+-0.22Co I
Ni I4-5.65+-0.21-0.37+-0.210.60+-0.21-5.62+-0.21-0.18+-0.210.60+-0.21Ni I
Zn I1<-2.63+-0.16<+2.65+-0.16<1.97+-0.16<-2.59+-0.16<2.85+-0.16<1.97+-0.16Zn I
Sr II1<-5.80+-0.20<-0.52+-0.20<-2.83+-0.20<-5.70+-0.20<-0.26+-0.20<-2.83+-0.20Sr II
Ba II1<-4.46+-0.19<+0.82+-0.19<-2.33+-0.19<-4.51+-0.19<0.93+-0.19<-2.33+-0.19Ba II
Eu II1<-2.50+-0.19<+2.78+-0.19<-1.99+-0.19<-2.51+-0.19<2.93+-0.19<-1.99+-0.19Eu II

Isotopic Ratio

12C/13C >50

Binary Parameters

Vrad 44.1+-0.4

Position

Right Ascension : 01 09 29.16 Declination : -52 24 34.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-12-20-005545 N/A VLT 40000 54-143 3600 N/A
2001-12-20-020331 N/A VLT 40000 54-143 3600 N/A
2001-12-20-030458 N/A VLT 40000 54-143 3600 N/A
2001-12-21-012452 N/A VLT 40000 54-143 3000 N/A

M.S.Bessell et al.,ApJ, 612, L61, 2004(ADS)

ON THE OXYGEN ABUNDANCE OF HE 0107-5240


Stellar Parameters

Teff : 5100 log g : 2.20 vturb : 2.0

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
OHN/A...2.3+-0.4...-3.13+-0.42.33+-0.45.56+-0.4OH
FeN/A-5.4......-5.46...2.04Fe

Binary Parameters

Vrad 44.5+-0.5

Position

Right Ascension : 01 09 29.16 Declination : -52 24 34.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2002-12-27 N/A VLT 40000 30 20hour 44.5+-0.5

A.Arentsen et al.,AAP, 621, A108, 2019(ADS)

Binarity among CEMP-no stars: an indication of multiple formation pathways?


Stellar Parameters

Teff : 5100 log g : 2.2

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
CN/A...3.977.03-1.404.047.03C
FeN/A-5.44......-5.44...2.06Fe
BaN/A...<0.93...<-4.51<0.93<-2.33Ba

Binary Parameters

Binarity Positive
Vrad 44.78+-1.91
Period 10000

Position

Right Ascension : 01 09 29.2 Declination : -52 24 34 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2013-11-22-000000 2456618.5 SALTHRS 16000 N/A N/A 48.15+-0.49
2014-07-20-000000 2456858.5 SALTHRS 16000 N/A N/A 46.6+-4.75
2014-10-26-180000 2456957.25 SALTHRS 16000 N/A N/A 47.19+-2.39
2014-11-29-000000 2456990.5 SALTHRS 16000 N/A N/A 48.29+-0.94