HE1012-1540

taken from 5 paper(s):

/J.G.Cohen et al.(2008)/ /J.G.Cohen et al.(2013)/ /I.U.Roederer et al.(2014)/ /I.U.Roederer et al.(2014)/ /A.Arentsen et al.(2019)/

J.G.Cohen et al.,ApJ, 672, 320, 2008(ADS)

New Extremely Metal-Poor Stars in the Galactic Halo


Stellar Parameters

Teff : 5620 log g : 3.40 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
CH1...2.227.38-1.052.437.38CH
NH1...1.255.75-2.081.405.75NH
OH2...2.25+-0.257.65+-0.25-1.04+-0.252.44+-0.257.65+-0.25OH
Na I2...1.21+-0.074.11+-0.07-2.13+-0.071.35+-0.074.11+-0.07Na I
Mg I6...1.88+-0.445.99+-0.44-1.61+-0.441.87+-0.445.99+-0.44Mg I
Al I1...0.933.97-2.481.003.97Al I
Si I1...1.075.20-2.311.175.20Si I
Ca I2...0.57+-0.163.50+-0.16-2.84+-0.160.64+-0.163.50+-0.16Ca I
Ca II1...-0.342.59-3.75-0.272.59Ca II
Ti I1...<0.75<2.31<-2.64<0.84<2.31Ti I
Ti II7...-0.03+-0.121.53+-0.12-3.42+-0.120.06+-0.121.53+-0.12Ti II
Cr I2...-0.33+-0.091.91+-0.09-3.73+-0.09-0.25+-0.091.91+-0.09Cr I
Mn I2...-0.55+-0.011.41+-0.01-4.02+-0.01-0.54+-0.011.41+-0.01Mn I
Mn II1...-1.000.96-4.47-0.990.96Mn II
Fe I28-3.43+-0.17...4.02+-0.17-3.48+-0.17...4.02+-0.17Fe I
Fe II5-3.71+-0.35-0.28+-0.353.75+-0.35-3.75+-0.35-0.28+-0.353.75+-0.35Fe II
Co I1...0.191.68-3.310.171.68Co I
Ni I2...-0.32+-0.092.50+-0.09-3.72+-0.09-0.24+-0.092.50+-0.09Ni I
Cu I1...-0.630.15-4.04-0.560.15Cu I
Sr II1...-0.54-1.07-3.94-0.46-1.07Sr II
Ba II2...-0.29+-0.02-1.58+-0.02-3.76+-0.02-0.28+-0.02-1.58+-0.02Ba II
Eu II1...<1.62<-1.30<-1.82<1.66<-1.30Eu II
Pb I1...<2.93<1.46<-0.58<2.90<1.46Pb I

Binary Parameters

Binarity Positive

Position

Right Ascension : 10 14 53.48 Declination : -15 55 53.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2452396.82 KECKHIRES 46000 109 3600 +226.3+-0.4
2453489.77 KECKHIRES 46000 109 3600 +224.8+-0.1

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 : 5520+-100 log g : 4.7+-0.25 vturb : 1.1+-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
CH1...2.22...-1.132.437.30CH
NH1...1.25...-2.161.405.67NH
O I2...2.14+-0.25...-1.13+-0.252.43+-0.257.56+-0.25O I
Na I2...1.02+-0.11...-2.41+-0.111.15+-0.113.83+-0.11Na I
Mg I6...1.38+-0.11...-2.19+-0.111.37+-0.115.41+-0.11Mg I
Al I1...0.49...-3.000.563.45Al I
Si I1...0.56...-2.910.654.60Si I
Ca I3...0.53+-0.14...-2.96+-0.140.60+-0.143.38+-0.14Ca I
Ca II1...0.13...-3.360.202.98Ca II
Ti I1...<0.75...<-2.72<0.84<2.23Ti I
Ti II7...0.47+-0.12...-3.00+-0.120.56+-0.121.95+-0.12Ti II
Cr I2...-0.32+-0.09...-3.80+-0.09-0.24+-0.091.84+-0.09Cr I
Mn I2...-0.54+-0.01...-4.09+-0.01-0.53+-0.011.34+-0.01Mn I
Mn II1...-0.53...-4.08-0.521.35Mn II
Fe I28-3.51+-0.16......-3.56+-0.16...3.94+-0.16Fe I
Fe II2-3.59+-0.07-0.08+-0.07...-3.64+-0.07-0.08+-0.073.86+-0.07Fe II
Co I1...0.23...-3.350.211.64Co I
Ni I2...-0.27+-0.12...-3.75+-0.12-0.19+-0.122.47+-0.12Ni I
Cu I1...-0.7...-4.19-0.630.00Cu I
Sr II1...-0.03...-3.510.05-0.64Sr II
Ba II2...0.19+-0.01...-3.37+-0.010.19+-0.01-1.19+-0.01Ba II
Eu II1...<2.1...<-1.42<2.14<-0.90Eu II
Pb I1...<2.76...<-0.84<2.72<1.20Pb I

Binary Parameters

Vrad 226.7

Position

Right Ascension : 10 14 53.48 Declination : -15 55 53.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2002-05 N/A KECKHIRES 36000 75 3600 226.3
2004-05 N/A KECKHIRES 36000 95 3600 225.8
2005-04 N/A KECKHIRES 36000 >150 3600 224.8
2012-03 N/A KECKHIRES 36000 >150 1000 226.7

I.U.Roederer et al.,ApJ, 784, 158, 2014(ADS)

Neutron-capture Nucleosynthesis in the First Stars


Stellar Parameters

Teff : 5230+-32 log g : 2.65+-0.20 vturb : 1.70+-0.06

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
Li I1......<0.75<-2.51<1.66<0.75Li I
CH1...1.99+-0.256.66+-0.25-1.77+-0.252.40+-0.256.66+-0.25CH
NH1...0.74+-0.364.81+-0.36-3.02+-0.361.15+-0.364.81+-0.36NH
O I2...<2.18<6.70<-1.99<2.18<6.70O I
Na I2...1.65+-0.293.72+-0.29-2.52+-0.291.65+-0.293.72+-0.29Na I
Mg I3...1.80+-0.155.24+-0.15-2.36+-0.151.81+-0.155.24+-0.15Mg I
Al I1...0.69+-0.292.97+-0.29-3.48+-0.290.69+-0.292.97+-0.29Al I
K I1...<1.01<1.87<-3.16<1.01<1.87K I
Ca I4...0.88+-0.183.05+-0.18-3.29+-0.180.88+-0.183.05+-0.18Ca I
Sc II1...<-0.07<-0.68<-3.83<0.34<-0.68Sc II
Ti II5...-0.61+-0.170.58+-0.17-4.37+-0.17-0.20+-0.170.58+-0.17Ti II
V II2...<1.13<1.30<-2.63<1.54<1.30V II
Cr I1...-0.35+-0.191.12+-0.19-4.52+-0.19-0.35+-0.191.12+-0.19Cr I
Mn I1...-0.52+-0.150.74+-0.15-4.69+-0.15-0.52+-0.150.74+-0.15Mn I
Fe I48-4.17+-0.16...3.33+-0.16-4.17+-0.16...3.33+-0.16Fe I
Fe II1-3.76+-0.20...3.74+-0.20-3.76+-0.20...3.74+-0.20Fe II
Co I2...0.26+-0.211.08+-0.21-3.91+-0.210.26+-0.211.08+-0.21Co I
Ni I5...-0.06+-0.212.00+-0.21-4.22+-0.21-0.05+-0.212.00+-0.21Ni I
Zn I3...<1.51<1.90<-2.66<1.51<1.90Zn I
Ga I1...<2.06<0.93<-2.15<2.02<0.93Ga I
Rb I1...<3.71<2.06<-0.30<3.87<2.06Rb I
Sr II2...-0.80+-0.15-1.69+-0.15-4.56+-0.15-0.39+-0.15-1.69+-0.15Sr II
Y II6...<-0.08<-1.63<-3.84<0.33<-1.63Y II
Zr II2...<0.90<-0.28<-2.86<1.31<-0.28Zr II
Nb II1...<3.24<0.94<-0.52<3.65<0.94Nb II
Mo I1...<2.65<0.36<-1.52<2.65<0.36Mo I
Ba II1...-0.69+-0.16-2.27+-0.16-4.45+-0.16-0.28+-0.16-2.27+-0.16Ba II
Ce II5...<1.47<-0.71<-2.29<1.88<-0.71Ce II
Pr II3...<1.72<-1.32<-2.04<2.13<-1.32Pr II
Nd II4...<1.42<-0.92<-2.34<1.83<-0.92Nd II
Sm II2...<2.01<-0.79<-1.75<2.42<-0.79Sm II
Eu II4...<1.19<-2.05<-2.57<1.60<-2.05Eu II
Gd II2...<2.40<-0.29<-1.36<2.81<-0.29Gd II
Tb II2...<2.41<-1.05<-1.37<2.80<-1.05Tb II
Dy II3...<1.34<-1.32<-2.42<1.75<-1.32Dy II
Ho II1...<2.06<-1.22<-1.69<2.48<-1.22Ho II
Er II3...<1.83<-1.01<-1.93<2.24<-1.01Er II
Tm II2...<2.34<-1.32<-1.44<2.73<-1.32Tm II
Yb II1...<1.24<-1.60<-2.52<1.65<-1.60Yb II
Hf II2...<2.66<-0.25<-0.96<3.21<-0.25Hf II
Pb I1...<3.51<1.38<-0.66<3.51<1.38Pb I

Isotopic Ratio

12C/13C >30

Binary Parameters

Vrad 225.4

Position

Right Ascension : 10 14 53.48 Declination : -15 55 53.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2013-4-21-23:40 2456404.489 MIKELCO 41000 60-150 1800 225.4
2013-4-23-1:45 2456405.576 MIKELCO 41000 60-150 5400 225.8

I.U.Roederer et al.,AJ, 147, 136, 2014(ADS)

A SEARCH FOR STARS OF VERY LOW METAL ABUNDANCE. VI. DETAILED ABUNDANCES OF 313 METAL-POOR STARS


Stellar Parameters

Teff : 5230+-32 log g : 2.65+-0.2 vturb : 1.7+-0.06

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
Li I1......<0.75<-2.51<1.66<0.75Li I
CH1...1.99+-0.256.66-1.772.40+-0.256.66CH
NH1...0.74+-0.364.81-3.021.15+-0.364.81NH
O I2...<2.18<6.70<-1.99<2.18<6.70O I
Na I2...1.65+-0.293.72-2.521.65+-0.293.72Na I
Mg I3...1.80+-0.155.24-2.361.81+-0.155.24Mg I
Al I1...0.69+-0.292.97-3.480.69+-0.292.97Al I
K I1...<1.01<1.87<-3.16<1.01<1.87K I
Ca I4...0.88+-0.183.05-3.290.88+-0.183.05Ca I
Sc II1...<-0.07<-0.68<-3.83<0.34<-0.68Sc II
Ti II5...-0.61+-0.170.58-4.37-0.20+-0.170.58Ti II
V II2...<1.13<1.30<-2.63<1.54<1.30V II
Cr I1...-0.35+-0.191.12-4.52-0.35+-0.191.12Cr I
Mn I1...-0.52+-0.150.74-4.69-0.52+-0.150.74Mn I
Fe I48-4.17+-0.16...3.33-4.17+-0.16...3.33Fe I
Fe II1-3.76+-0.20...3.74-3.76+-0.20...3.74Fe II
Co I2...0.26+-0.211.08-3.910.26+-0.211.08Co I
Ni I5...-0.06+-0.212.00-4.22-0.05+-0.212.00Ni I
Zn I3...<1.51<1.90<-2.66<1.51<1.90Zn I
Ga I1...<2.06<0.93<-2.15<2.02<0.93Ga I
Rb I1...<3.71<2.06<-0.30<3.87<2.06Rb I
Sr II2...-0.80+-0.15-1.69-4.56-0.39+-0.15-1.69Sr II
Y II6...<-0.08<-1.63<-3.84<0.33<-1.63Y II
Zr II2...<0.90<-0.28<-2.86<1.31<-0.28Zr II
Nb II1...<3.24<0.94<-0.52<3.65<0.94Nb II
Mo I1...<2.65<0.36<-1.52<2.65<0.36Mo I
Ba II1...-0.69+-0.16-2.27-4.45-0.28+-0.16-2.27Ba II
Ce II5...<1.47<-0.71<-2.29<1.88<-0.71Ce II
Pr II3...<1.72<-1.32<-2.04<2.13<-1.32Pr II
Nd II4...<1.42<-0.92<-2.34<1.83<-0.92Nd II
Sm II2...<2.01<-0.79<-1.75<2.42<-0.79Sm II
Eu II4...<1.19<-2.05<-2.57<1.60<-2.05Eu II
Gd II2...<2.40<-0.29<-1.36<2.81<-0.29Gd II
Tb II2...<2.41<-1.05<-1.37<2.80<-1.05Tb II
Dy II3...<1.34<-1.32<-2.42<1.75<-1.32Dy II
Ho II1...<2.06<-1.22<-1.69<2.48<-1.22Ho II
Er II3...<1.83<-1.01<-1.93<2.24<-1.01Er II
Tm II2...<2.34<-1.32<-1.44<2.73<-1.32Tm II
Yb II1...<1.24<-1.60<-2.52<1.65<-1.60Yb II
Hf II2...<2.66<-0.25<-0.96<3.21<-0.25Hf II
Pb I1...<3.51<1.38<-0.66<3.51<1.38Pb I

Binary Parameters

Binarity Positive
Vrad 225.6

Position

Right Ascension : 10 14 53.48 Declination : -15 55 53.2 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2013-04-21-23:40 2456404.489 MIKELCO 41000 60-150 1800 225.4
2013-04-23-01:45 2456405.576 MIKELCO 41000 60-150 5400 225.8

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

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


Stellar Parameters

Teff : 5230 log g : 2.7

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...2.46.67-1.762.416.67C
FeN/A-4.17......-4.17...3.33Fe
BaN/A...-0.28...-4.45-0.28-2.27Ba

Binary Parameters

Binarity Negative
Vrad 225.84+-0.47

Position

Right Ascension : 10 14 53.5 Declination : -15 55 53 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2014-01-12-023823 2456669.61 GECKOCFHT 68000 N/A N/A 226.17+-0.64
2014-01-12-025248 2456669.62 GECKOCFHT 68000 N/A N/A 225.33+-0.59
2014-01-18-022400 2456675.6 GECKOCFHT 68000 N/A N/A 225.27+-0.34
2014-02-09-001423 2456697.51 GECKOCFHT 68000 N/A N/A 225.35+-0.33
2014-04-10-171648 2456758.22 GECKOCFHT 68000 N/A N/A 225.41+-0.26
2014-12-07-000000 2456998.5 GECKOCFHT 68000 N/A N/A 225.43+-0.49