HE2139-5432

taken from 3 paper(s):

/J.E.Norris et al.(2013)/ /D.Yong et al.(2013)/ /A.Arentsen et al.(2019)/

J.E.Norris et al.,ApJ, 762, 25, 2013(ADS)

The Most Metal-poor Stars. I. Discovery, Data, and Atmospheric Parameters


Stellar Parameters

Teff : 5416+-41 log g : 2.2

Position

Right Ascension : 21 42 42.40 Declination : -54 18 42.9 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2007-12 2454457.519 MIKELCO 37000 100 112.3 N/A
2007-12 2454457.53 MIKELCO 37000 100 113.6 N/A
2007-12 2454457.542 MIKELCO 37000 100 114.3 N/A
2008-9 2454716.487 MIKELCO 30000-36000 100 115.5 N/A
2008-9 2454716.502 MIKELCO 30000-36000 100 115 N/A
2008-9 2454716.517 MIKELCO 30000-36000 100 116.3 N/A
2008-9 2454716.538 MIKELCO 30000-36000 100 114.9 N/A
2008-9 2454716.56 MIKELCO 30000-36000 100 114.7 N/A
2008-9 2454716.582 MIKELCO 30000-36000 100 116.7 N/A
2008-9 2454716.606 MIKELCO 30000-36000 100 116 N/A
2008-9 2454716.628 MIKELCO 30000-36000 100 115.2 N/A
2008-9 2454716.649 MIKELCO 30000-36000 100 112.4 N/A
2008-9 2454716.673 MIKELCO 30000-36000 100 115.1 N/A
2008-9 2454716.695 MIKELCO 30000-36000 100 115.8 N/A
2008-9 2454716.717 MIKELCO 30000-36000 100 114 N/A
2008-9 2454716.739 MIKELCO 30000-36000 100 114.7 N/A
2008-9 2454717.711 MIKELCO 30000-36000 100 120.9 N/A

D.Yong et al.,ApJ, 762, 26, 2013(ADS)

THE MOST METAL-POOR STARS. II. CHEMICAL ABUNDANCES OF 190 METAL-POOR STARS INCLUDING 10 NEW STARS WITH [Fe/H] <-3.


Stellar Parameters

Teff : 5416 log g : 3.04 vturb : 0.8

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...2.597.01-1.422.607.01C
NN/A...2.085.9-1.932.095.9N
Na2...2.15+-0.194.37+-0.19-1.87+-0.192.15+-0.194.37+-0.19Na
Mg3...1.61+-0.165.19+-0.16-2.41+-0.161.61+-0.165.19+-0.16Mg
Al1...0.362.79-3.660.362.79Al
Si1...14.49-3.021.004.49Si
Ca1...<0.70<3.02<-3.32<0.70<3.02Ca
Cr1...0.341.96-3.680.341.96Cr
Mn1...<-0.58<0.83<-4.60<-0.58<0.83Mn
Fe I33-4.02+-0.16...3.48+-0.16-4.02+-0.16...3.48+-0.16Fe I
Fe II1-3.52...3.98-3.52...3.98Fe II
Co1...0.621.59-3.400.621.59Co
Ni2...0.17+-0.162.37+-0.16-3.85+-0.160.17+-0.162.37+-0.16Ni
Sr2...-0.55+-0.2-1.71+-0.2-4.58+-0.2-0.56+-0.2-1.71+-0.2Sr
Ba1...<-0.33<-2.17<-4.35<-0.33<-2.17Ba

Position

Right Ascension : 21 42 42.40 Declination : -54 18 42.9 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
N/A VLT N/A N/A N/A N/A

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

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


Stellar Parameters

Teff : 5416 log g : 3.0

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
CN/A...2.597.01-1.422.607.01C
FeN/A-4.02......-4.02...3.48Fe
BaN/A...<-0.33...<-4.35<-0.33<-2.17Ba

Binary Parameters

Binarity Positive
Vrad 102.18+-10.07
Period 300

Position

Right Ascension : 21 42 42.5 Declination : -54 18 43 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2013-11-23-180000 2456620.25 SALTHRS 16000 N/A N/A 98.58+-4
2014-08-30-180000 2456900.25 SALTHRS 16000 N/A N/A 95.79+-0.29