HE0228-4047

taken from 2 paper(s):

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

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

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


Stellar Parameters

Teff : 6515+-77 log g : 4.3

Position

Right Ascension : 02 30 33.60 Declination : -40 33 56.0 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 2454456.63 MIKELCO 37000 100 122.1 N/A
2007-12 2454456.645 MIKELCO 37000 100 123.9 N/A
2007-12 2454456.66 MIKELCO 37000 100 123.8 N/A
2007-12 2454456.675 MIKELCO 37000 100 121.9 N/A
2007-12 2454456.69 MIKELCO 37000 100 126.3 N/A
2007-12 2454457.654 MIKELCO 37000 100 123.2 N/A
2007-12 2454457.676 MIKELCO 37000 100 125.4 N/A
2007-12 2454457.698 MIKELCO 37000 100 125.8 N/A
2007-12 2454457.72 MIKELCO 37000 100 122.1 N/A
2008-9 2454717.892 MIKELCO 30000-36000 100 129.5 N/A
2008-9 2454717.907 MIKELCO 30000-36000 100 127.4 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 : 6515 log g : 3.8 vturb : 1.7

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...<1.88<6.56<-1.87<1.88<6.56C
Mg3...0.26+-0.124.11+-0.12-3.49+-0.120.26+-0.124.11+-0.12Mg
Si1...0.354.11-3.400.354.11Si
Ca1...0.392.98-3.360.392.98Ca
Cr2...-0.01+-0.141.88+-0.14-3.76+-0.14-0.01+-0.141.88+-0.14Cr
Fe I26-3.75+-0.11...3.75+-0.11-3.75+-0.11...3.75+-0.11Fe I
Ni1...0.492.96-3.260.492.96Ni
Sr1...<-0.58<-1.46<-4.33<-0.58<-1.46Sr
Ba1...<0.40<-1.17<-3.35<0.40<-1.17Ba

Position

Right Ascension : 02 30 33.60 Declination : -40 33 56.0 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