BS16928-053

taken from 5 paper(s):

/S.Honda et al.(2004)/ /D.K.Lai et al.(2004)/ /S.Honda et al.(2004)/ /D.K.Lai et al.(2007)/ /D.K.Lai et al.(2008)/

S.Honda et al.,ApJ, 607, 474, 2004(ADS)

Spectroscopic Studies of Extremely Metal-Poor Stars with the Subaru High Dispersion Spectrograph. II. The r-Process Elements, Including Thorium


Stellar Parameters

Teff : 4590 log g : 0.9 vturb : 1.6

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
CHN/A...-0.235.42-3.01-0.115.42CH
Mg I4...0.39+-0.355.06+-0.35-2.54+-0.350.36+-0.355.06+-0.35Mg I
Al I1...-0.83+-0.152.74+-0.15-3.71+-0.15-0.81+-0.152.74+-0.15Al I
Si I1...0.29+-0.154.93+-0.15-2.58+-0.150.32+-0.154.93+-0.15Si I
Ca I4...0.31+-0.073.76+-0.07-2.58+-0.070.32+-0.073.76+-0.07Ca I
Sc II2...-0.3+-0.13-0.04+-0.13-3.19+-0.13-0.29+-0.13-0.04+-0.13Sc II
Ti23...0.13+-0.092.24+-0.09-2.71+-0.090.19+-0.092.24+-0.09Ti
V2...-0.16+-0.150.93+-0.15-3.00+-0.15-0.10+-0.150.93+-0.15V
Cr2...-0.08+-0.152.68+-0.15-2.96+-0.15-0.06+-0.152.68+-0.15Cr
Mn I6...-0.24+-0.092.24+-0.09-3.19+-0.09-0.29+-0.092.24+-0.09Mn I
Fe80-2.91+-0.14...4.6+-0.14-2.90+-0.14...4.6+-0.14Fe
Co I3...0.13+-0.112.14+-0.11-2.85+-0.110.05+-0.112.14+-0.11Co I
Ni I2...-0.25+-0.153.09+-0.15-3.13+-0.15-0.23+-0.153.09+-0.15Ni I
Sr II1...-0.23+-0.15-0.22+-0.15-3.09+-0.15-0.19+-0.15-0.22+-0.15Sr II
Y II5...-0.47+-0.13-1.15+-0.13-3.36+-0.13-0.46+-0.13-1.15+-0.13Y II
Zr II3...-0.25+-0.25-0.55+-0.25-3.13+-0.25-0.23+-0.25-0.55+-0.25Zr II
Ba II2...-1.16+-0.15-1.85+-0.15-4.03+-0.15-1.13+-0.15-1.85+-0.15Ba II

Isotopic Ratio

12C/13C >5

Position

Right Ascension : 12 22 28.02 Declination : +34 11 31.8 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-01-28 N/A SUBARUHDS 50000 49 5400 -81.00+-0.35

D.K.Lai et al.,AJ, 128, 2402, 2004(ADS)

ABUNDANCES OF EXTREMELY METAL-POOR STAR CANDIDATES


Stellar Parameters

Teff : 4743 log g : 1.61

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 IN/A...0.56...-2.330.545.27Mg I
Ca IN/A...0.40...-2.450.423.89Ca I
Ti IIN/A...0.37...-2.430.442.52Ti II
Fe IN/A-2.87......-2.87...4.63Fe I
Ba IIN/A...-0.75...-3.67-0.80-1.49Ba II

Binary Parameters

Vrad -80

Position

Right Ascension : 12 22 28.02 Declination : +34 11 31.8 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2003-04-23 N/A KECKII 7000 150 600 N/A

S.Honda et al.,ApJS, 152, 113, 2004(ADS)

Spectroscopic Studies of Extremely Metal-Poor Stars with the Subaru High Dispersion Spectrograph. I. Observational Data


Binary Parameters

Vrad -81.00+-0.35

Position

Right Ascension : 12 22 28.02 Declination : +34 11 31.8 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-01-28 N/A SUBARUHDS 50000 49 5400 -81.00+-0.35

D.K.Lai et al.,ApJ, 667, 1185, 2007(ADS)

Carbon and Strontium Abundances of Metal-poor Stars


Stellar Parameters

Teff : 4743 log g : 1.61

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...-0.15+-0.22...-2.89+-0.22-0.19+-0.225.54+-0.22C
FeN/A-2.87......-2.70...4.80Fe
SrN/A...0.12...-2.72-0.020.15Sr
BaN/A...-0.75...-3.67-0.97-1.49Ba

Position

Right Ascension : 12 22 28.02 Declination : +34 11 31.8 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 KECKII 7000 N/A N/A N/A

D.K.Lai et al.,ApJ, 681, 1524, 2008(ADS)

Detailed Abundances for 28 Metal-poor Stars: Stellar Relics in the Milky Way


Stellar Parameters

Teff : 4691+-100 log g : 1.16+-0.2 vturb : 2.1+-0.2

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
C1...-0.25+-0.22...-3.23+-0.22-0.16+-0.225.20+-0.22C
N1...1.05+-0.37...-1.93+-0.371.14+-0.375.90+-0.37N
Na2...0.03+-0.08...-2.95+-0.080.12+-0.083.29+-0.08Na
Mg5...0.29+-0.07...-2.80+-0.070.27+-0.074.80+-0.07Mg
Al2...-0.90+-0.05...-3.95+-0.05-0.88+-0.052.50+-0.05Al
Si1...1.16+-0.15...-1.87+-0.151.20+-0.155.64+-0.15Si
Ca11...0.21+-0.05...-2.84+-0.050.23+-0.053.50+-0.05Ca
Sc II4...-0.16+-0.08...-3.21+-0.08-0.14+-0.08-0.06+-0.08Sc II
Ti I4...-0.02+-0.07...-3.02+-0.070.05+-0.071.93+-0.07Ti I
Ti II16...0.21+-0.09...-2.79+-0.090.28+-0.092.16+-0.09Ti II
V II1...-0.37+-0.16...-3.37+-0.16-0.30+-0.160.56+-0.16V II
Cr I4...-0.25+-0.06...-3.29+-0.06-0.22+-0.062.35+-0.06Cr I
Mn I4...-0.71+-0.12...-3.82+-0.12-0.75+-0.121.61+-0.12Mn I
Mn II2...-0.50+-0.10...-3.61+-0.10-0.54+-0.101.82+-0.10Mn II
Fe I69-3.07+-0.09......-3.07+-0.09...4.43+-0.09Fe I
Fe II4-3.11+-0.08......-3.11+-0.08...4.39+-0.08Fe II
Co3...0.04+-0.08...-3.10+-0.08-0.03+-0.081.89+-0.08Co
Ni2...-0.15+-0.06...-3.19+-0.06-0.12+-0.063.03+-0.06Ni
Sr II2...-0.34+-0.17...-3.31+-0.17-0.24+-0.17-0.44+-0.17Sr II
Y II5...-0.41+-0.09...-3.45+-0.09-0.38+-0.09-1.24+-0.09Y II
Zr II2...-0.10+-0.12...-3.15+-0.12-0.08+-0.12-0.57+-0.12Zr II
Ba II4...-0.82+-0.09...-3.94+-0.09-0.87+-0.09-1.76+-0.09Ba II
Eu II1...<-0.40...<-3.48<-0.41<-2.96Eu II

Position

Right Ascension : 12 22 28.02 Declination : +34 11 31.8 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2004-04-07 N/A KECKHIRES 46000 101 7200 -81.5+-0.2
2004-04-09 N/A KECKHIRES 46000 121 2700 -80.9+-0.3