HE0024-2523

taken from 5 paper(s):

/S.Lucatello et al.(2003)/ /E.Carretta et al.(2002)/ /J.G.Cohen et al.(2002)/ /J.G.Cohen et al.(2004)/ /J.G.Cohen et al.(2013)/

S.Lucatello et al.,AJ, 125, 875, 2003(ADS)

STELLAR ARCHAEOLOGY: A KECK PILOT PROGRAM ON EXTREMELY METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. III. THE LEAD (Pb) STAR HE 0024-2523


Stellar Parameters

Teff : 6625 log g : 4.3 vturb : 1.4

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
LiN/A......1.5+-0.1-1.76+-0.11.01+-0.11.5+-0.1Li
CHN/A...2.6+-0.1...0.01+-0.12.78+-0.18.44+-0.1CH
CNN/A...2.1+-0.1...-0.40+-0.12.37+-0.17.43+-0.1CN
O I1...0.40...-2.080.696.61O I
Na I2...-0.17+-0.13...-2.80+-0.13-0.03+-0.133.44+-0.13Na I
Mg I4...0.73+-0.06...-2.01+-0.060.76+-0.065.59+-0.06Mg I
Al I1...-0.35...-3.05-0.283.40Al I
Si I1...0.34...-2.340.435.17Si I
Ca I4...0.66+-0.17...-2.04+-0.170.73+-0.174.30+-0.17Ca I
Sc II3...0.37+-0.14...-2.41+-0.140.36+-0.140.74+-0.14Sc II
Ti I3...0.85+-0.10...-1.83+-0.100.94+-0.103.12+-0.10Ti I
Ti II12...0.15+-0.05...-2.53+-0.050.24+-0.052.42+-0.05Ti II
Cr I2...-0.41+-0.15...-3.10+-0.15-0.33+-0.152.54+-0.15Cr I
Mn I2...-0.26+-0.06...-3.02+-0.06-0.25+-0.062.41+-0.06Mn I
Fe I36-2.72+-0.12......-2.77+-0.12...4.73+-0.12Fe I
Fe II3-2.67+-0.14......-2.72+-0.14...4.78+-0.14Fe II
Sr II2...0.34+-0.24...-2.35+-0.240.42+-0.240.52+-0.24Sr II
Y II1...<0.91...<-1.78<0.99<0.43Y II
Zr II1...<1.22...<-1.48<1.29<1.10Zr II
Ba II3...1.46+-0.20...-1.31+-0.201.46+-0.200.87+-0.20Ba II
La IN/A...1.8+-0.2...-0.80+-0.21.97+-0.20.30+-0.2La I
Eu IN/A...<1.1+-0.1...<-1.63+-0.1<1.14+-0.1<-1.11+-0.1Eu I
Pb IN/A...3.3+-0.1...0.59+-0.13.36+-0.12.63+-0.1Pb I

Isotopic Ratio

12C/13C 6+-1

Binary Parameters

Binarity Positive
Vrad -185.0
Period 3.14

Position

Right Ascension : 00 27 27.66 Declination : -25 06 28.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2000-09-24 2451811.386 KECKHIRES 45000 40 1200 -185.0+-0.4
2000-09-24 2451811.397 KECKHIRES 45000 40 1200 -183.6+-0.8
2000-09-24 2451811.412 KECKHIRES 45000 40 1200 -186.6+-0.7
2000-09-24 2451811.427 KECKHIRES 45000 40 1200 -187.4+-1.1
2000-09-24 2451811.442 KECKHIRES 45000 40 1200 -189.6+-0.3
2001-08-27 2452148.352 VLT 50000 80 3600 -127.0+-0.5
2001-09-27 2452179.398 KECKHIRES 45000 40 1200 -135.8+-1.1
2001-09-30 2452182.365 KECKHIRES 45000 40 1200 -125.6+-1.2
2001-10-23 2452205.017 VLT 50000 30 600 -218.2+-0.7
2001-10-23 2452206.014 VLT 50000 40 1800 -136.2+-0.4
2001-10-25 2452207.010 VLT 50000 20 600 -160.8+-0.6
2001-10-25 2452207.241 HALE 3500 30 400 -186.2+-5.0
2001-10-26 2452208.161 VLT 50000 35 1800 -228.6+-0.5
2001-10-26 2452208.251 HALE 3500 30 400 -227.8+-5.0
2001-10-27 2452209.218 HALE 3500 30 400 -145.6+-5.0
2001-10-28 2452210.021 VLT 50000 20 600 -133.9+-0.8
2001-10-28 2452210.216 HALE 3500 30 400 -140.1+-5.0
2001-10-28 2452210.255 VLT 50000 20 600 -148.2+-0.9

E.Carretta et al.,AJ, 124, 481, 2002(ADS)

STELLAR ARCHAEOLOGY: A KECK PILOT PROGRAM ON EXTREMELY METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. II. ABUNDANCE ANALYSIS


Stellar Parameters

Teff : 6625 log g : 4.30 vturb : 0.58

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
Mg I4...0.60+-0.14...-2.04+-0.140.57+-0.145.56+-0.14Mg I
Al I1...-0.38...-2.98-0.373.47Al I
Ca I3...0.59+-0.17...-2.01+-0.170.60+-0.174.33+-0.17Ca I
Sc II2...0.33+-0.13...-2.35+-0.130.26+-0.130.80+-0.13Sc II
Ti I2...0.52+-0.14...-2.06+-0.140.55+-0.142.89+-0.14Ti I
Ti II12...0.19+-0.08...-2.39+-0.080.22+-0.082.56+-0.08Ti II
Cr I1...-0.52...-3.11-0.502.53Cr I
Fe I33-2.62+-0.19......-2.61+-0.19...4.89+-0.19Fe I
Fe II2-2.57+-0.04......-2.56+-0.04...4.94+-0.04Fe II
Sr II2...0.50+-0.04...-2.09+-0.040.52+-0.040.78+-0.04Sr II
Ba II1...1.74...-0.931.681.25Ba II

Position

Right Ascension : 00 27 27.66 Declination : -25 06 28.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2000-09 N/A KECKHIRES 45000 N/A N/A N/A

J.G.Cohen et al.,AJ, 124, 470, 2002(ADS)

STELLAR ARCHAEOLOGY: A KECK PILOT PROGRAM ON EXTREMELY METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. I. STELLAR PARAMETERS


Stellar Parameters

Teff : 6625 log g : 4.3

Binary Parameters

Vrad -181.6

Position

Right Ascension : 00 27 27.66 Declination : -25 06 28.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2000-09 N/A KECKHIRES 45000 98 6000

J.G.Cohen et al.,ApJ, 612, 1107, 2004(ADS)

Abundances In Very Metal-Poor Dwarf Stars


Stellar Parameters

Teff : 6625 log g : 4.3 vturb : 1.4

Isotopic Ratio

12C/13C 7.5+-1.5

Binary Parameters

Binarity Positive

Position

Right Ascension : 00 27 27.66 Declination : -25 06 28.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

J.G.Cohen et al.,ApJ, 778, 56, 2013(ADS)

Normal and Outlying Populations of the Milky Way Stellar Halo at [Fe/H] <-2


Stellar Parameters

Teff : 6625 log g : 4.3 vturb : 0.6

Position

Right Ascension : 00 27 27.66 Declination : -25 06 28.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log