BS16550-087

taken from 4 paper(s):

/D.K.Lai et al.(2004)/ /D.K.Lai et al.(2007)/ /D.K.Lai et al.(2008)/ /J.G.Cohen et al.(2013)/


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

ABUNDANCES OF EXTREMELY METAL-POOR STAR CANDIDATES


Stellar Parameters

Teff : 4791 log g : 1.72

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...0.64...-2.480.625.12Mg I
Ca IN/A...0.25...-2.830.273.51Ca I
Ti IIN/A...0.48...-2.550.552.40Ti II
Fe IN/A-3.10......-3.10...4.40Fe I
Ba IIN/A...-0.98...-4.13-1.03-1.95Ba II

Binary Parameters

Vrad -144

Position

Right Ascension : 14 10 26.72 Declination : +18 01 24.0 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 150 900 N/A

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

Carbon and Strontium Abundances of Metal-poor Stars


Stellar Parameters

Teff : 4791 log g : 1.72

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...-0.65+-0.26...-3.62+-0.26-0.69+-0.264.81+-0.26C
FeN/A-3.10......-2.93...4.57Fe
SrN/A...0.80...-2.270.660.60Sr
BaN/A...-0.98...-4.13-1.20-1.95Ba

Position

Right Ascension : 14 10 26.72 Declination : +18 01 24.0 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 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 : 4750+-100 log g : 1.31+-0.2 vturb : 2.3+-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...-0.49+-0.22...-3.93+-0.22-0.40+-0.224.50+-0.22C
N1...1.11+-0.37...-2.33+-0.371.20+-0.375.50+-0.37N
Na2...0.01+-0.08...-3.43+-0.080.10+-0.082.81+-0.08Na
Mg9...0.58+-0.05...-2.97+-0.050.56+-0.054.63+-0.05Mg
Al2...-0.61+-0.05...-4.12+-0.05-0.59+-0.052.33+-0.05Al
Si1...0.40+-0.15...-3.09+-0.150.44+-0.154.42+-0.15Si
Ca9...0.23+-0.06...-3.28+-0.060.25+-0.063.06+-0.06Ca
Sc II4...-0.05+-0.09...-3.56+-0.09-0.03+-0.09-0.41+-0.09Sc II
Ti I7...0.18+-0.08...-3.28+-0.080.25+-0.081.67+-0.08Ti I
Ti II20...0.15+-0.07...-3.31+-0.070.22+-0.071.64+-0.07Ti II
Cr I4...-0.59+-0.09...-4.09+-0.09-0.56+-0.091.55+-0.09Cr I
Mn I3...-0.96+-0.10...-4.53+-0.10-1.00+-0.100.90+-0.10Mn I
Fe I122-3.53+-0.09......-3.53+-0.09...3.97+-0.09Fe I
Fe II12-3.51+-0.09......-3.51+-0.09...3.99+-0.09Fe II
Co3...0.22+-0.07...-3.38+-0.070.15+-0.071.61+-0.07Co
Ni3...-0.08+-0.06...-3.58+-0.06-0.05+-0.062.64+-0.06Ni
Sr II2...0.42+-0.17...-3.01+-0.170.52+-0.17-0.14+-0.17Sr II
Y II9...0.29+-0.08...-3.21+-0.080.32+-0.08-1.00+-0.08Y II
Zr II8...0.74+-0.10...-2.77+-0.100.76+-0.10-0.19+-0.10Zr II
Ba II4...-0.74+-0.11...-4.32+-0.11-0.79+-0.11-2.14+-0.11Ba II
Eu II1...<0.00...<-3.54<-0.01<-3.02Eu II

Binary Parameters

Binarity Positive

Position

Right Ascension : 14 10 26.72 Declination : +18 01 24.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2003-06-06 N/A KECKHIRES 46000 65 7200 -144.4+-0.2
2004-04-07 N/A KECKHIRES 46000 63 1800 -148.3+-0.2
2004-04-09 N/A KECKHIRES 46000 134 1800 -148.9+-0.6

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 : 4750+-100 log g : 1.3+-0.25 vturb : 2.5+-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
CH1...-0.25...-3.48-0.044.95CH
NH1...0.76...-2.530.915.30NH
Na I2...-0.17+-0.05...-3.48+-0.05-0.04+-0.052.76+-0.05Na I
Mg I7...0.64+-0.1...-2.81+-0.10.63+-0.14.79+-0.1Mg I
Al I2...0.06+-0.08...-3.31+-0.080.13+-0.083.14+-0.08Al I
Si I1...0.42...-2.930.514.58Si I
Ca I10...0.22+-0.13...-3.15+-0.130.29+-0.133.19+-0.13Ca I
Sc II5...-0.04+-0.07...-3.48+-0.07-0.04+-0.07-0.33+-0.07Sc II
Ti I9...0.21+-0.12...-3.14+-0.120.30+-0.121.81+-0.12Ti I
Ti II21...0.01+-0.12...-3.34+-0.120.10+-0.121.61+-0.12Ti II
V II2...-0.31+-0.08...-3.63+-0.08-0.19+-0.080.30+-0.08V II
Cr I7...-0.48+-0.21...-3.84+-0.21-0.40+-0.211.80+-0.21Cr I
Mn I2...-0.96+-0.01...-4.39+-0.01-0.95+-0.011.04+-0.01Mn I
Mn II3...-0.85+-0.09...-4.28+-0.09-0.84+-0.091.15+-0.09Mn II
Fe I79-3.39+-0.15......-3.44+-0.15...4.06+-0.15Fe I
Fe II12-3.44+-0.14-0.05+-0.14...-3.49+-0.14-0.05+-0.144.01+-0.14Fe II
Co I4...0.19+-0.2...-3.27+-0.20.17+-0.21.72+-0.2Co I
Ni I2...-0.33+-0.03...-3.69+-0.03-0.25+-0.032.53+-0.03Ni I
Cu I2...-0.86+-0.31...-4.23+-0.31-0.79+-0.31-0.04+-0.31Cu I
Zn I2...0.56...-2.790.651.77Zn I
Sr II1...0.45...-2.910.53-0.04Sr II
Y II8...0.18+-0.11...-3.18+-0.110.26+-0.11-0.97+-0.11Y II
Zr II4...0.54+-0.15...-2.83+-0.150.61+-0.15-0.25+-0.15Zr II
Ba II1...-1.03...-4.47-1.03-2.29Ba II
Eu II1...<0.09...<-3.31<0.13<-2.79Eu II

Binary Parameters

Vrad -149

Position

Right Ascension : 14 10 26.72 Declination : +18 01 24.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2006-04 N/A KECKHIRES 36000 N/A N/A -149