HD20

taken from 8 paper(s):

/D.L.Burris et al.(2000)/ /N.Christlieb et al.(2004)/ /R.G.Gratton et al.(2000)/ /P.S.Barklem et al.(2005)/ /J.P.Fulbright and J. A. Johnson(2003)/ /B.W.Carney et al.(2003)/ /L.Zhang et al.(2011)/ /J.Ren et al.(2012)/

D.L.Burris et al.,ApJ, 544, 302, 2000(ADS)

NEUTRON-CAPTURE ELEMENTS IN THE EARLY GALAXY: INSIGHTS FROM A LARGE SAMPLE OF METAL-POOR GIANTS


Stellar Parameters

Teff : 5475 log g : 2.80 vturb : 2.00

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
FeN/A-1.39......-1.22...6.28Fe
SrN/A...0.051.56-1.31-0.091.56Sr
YN/A...-0.050.80-1.41-0.190.80Y
ZrN/A...0.461.67-0.910.311.67Zr
BaN/A...0.581.32-0.860.361.32Ba
LaN/A...0.390.22-0.880.340.22La
NdN/A...0.580.69-0.730.490.69Nd
EuN/A...0.77-0.11-0.630.59-0.11Eu
DyN/A...0.920.63-0.470.750.63Dy

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 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 MAYALLKPNO 20000 100-200 N/A N/A

N.Christlieb et al.,AAP, 428, 1027, 2004(ADS)

The Hamburg/ESO R-process Enhanced Star survey (HERES)


Stellar Parameters

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-12-04-003244 N/A N/A 20000 101 60

R.G.Gratton et al.,AAP, 354, 169, 2000(ADS)

Mixing along the red giant branch in metal-poor field stars


Stellar Parameters

Teff : 5359 log g : 2.52 vturb : 1.60

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 IN/A......0.50-2.76-1.110.50Li I
ON/A...0.60...-0.820.837.87O
[O I]N/A...0.43...-0.990.667.70[O I]
NaN/A...0.39...-1.220.435.02Na
Fe IN/A-1.60......-1.65...5.85Fe I

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
1995-05 N/A CESESO 50000 80-150 N/A N/A
1995-11 N/A CESESO 50000 80-150 N/A N/A
1995-11 N/A MCDONALD 60000 70-100 N/A N/A

P.S.Barklem et al.,AAP, 439, 129, 2005(ADS)

The Hamburg/ESO R-process enhanced star survey (HERES). II. Spectroscopic analysis of the survey sample


Stellar Parameters

Teff : 5445 log g : 2.39 vturb : 2.30

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...-0.34+-0.276.47+-0.24-1.96+-0.24-0.38+-0.276.47+-0.24CH
Mg I6...0.17+-0.246.17+-0.18-1.43+-0.180.15+-0.246.17+-0.18Mg I
Al I1...-0.82+-0.254.07+-0.23-2.38+-0.23-0.80+-0.254.07+-0.23Al I
Ca I9...0.24+-0.255.02+-0.20-1.32+-0.200.26+-0.255.02+-0.20Ca I
Sc II5...0.12+-0.241.71+-0.23-1.44+-0.230.14+-0.241.71+-0.23Sc II
Ti17...0.20+-0.223.64+-0.21-1.31+-0.210.27+-0.223.64+-0.21Ti
V3...-0.03+-0.232.39+-0.20-1.54+-0.200.04+-0.232.39+-0.20V
Cr I3...-0.22+-0.243.87+-0.26-1.77+-0.26-0.19+-0.243.87+-0.26Cr I
Mn I5...-0.36+-0.233.45+-0.19-1.98+-0.19-0.40+-0.233.45+-0.19Mn I
Fe54...0.00+-0.225.92+-0.20-1.58+-0.200.00+-0.225.92+-0.20Fe
Co I6...0.08+-0.243.42+-0.22-1.57+-0.220.01+-0.243.42+-0.22Co I
Ni I4...-0.09+-0.254.58+-0.28-1.64+-0.28-0.06+-0.254.58+-0.28Ni I
Zn I2...0.01+-0.253.03+-0.20-1.53+-0.200.05+-0.253.03+-0.20Zn I
Sr2...0.12+-0.241.51+-0.22-1.36+-0.220.22+-0.241.51+-0.22Sr
Y II6...-0.04+-0.230.62+-0.22-1.59+-0.22-0.01+-0.230.62+-0.22Y II
Zr II2...0.38+-0.241.40+-0.22-1.18+-0.220.40+-0.241.40+-0.22Zr II
Ba II2...0.31+-0.230.86+-0.20-1.32+-0.200.26+-0.230.86+-0.20Ba II
La II5...0.33+-0.24-0.08+-0.22-1.18+-0.220.40+-0.24-0.08+-0.22La II
Ce II5...0.25+-0.260.25+-0.24-1.33+-0.240.25+-0.260.25+-0.24Ce II
Nd II8...0.34+-0.240.26+-0.23-1.16+-0.230.42+-0.240.26+-0.23Nd II
Sm II2...0.58+-0.250.01+-0.23-0.95+-0.230.63+-0.250.01+-0.23Sm II
Eu II4...0.80+-0.24-0.27+-0.23-0.79+-0.230.79+-0.24-0.27+-0.23Eu II

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 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 20000 113 N/A -57.5

J.P.Fulbright et al.,ApJ, 595, 1154, 2003(ADS)

Oxygen Abundances in Metal-poor Stars


Stellar Parameters

Teff : 5375 log g : 2.41 vturb : 1.9

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
O IN/A...0.34+-0.077.6+-0.1-1.09+-0.10.32+-0.077.6+-0.1O I
FeN/A-1.43......-1.41...6.09Fe
Fe IN/A......6.03+-0.07-1.47+-0.07...6.03+-0.07Fe I
Fe IIN/A......6.09+-0.04-1.41+-0.04...6.09+-0.04Fe II

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-10-01 N/A GECKOCFHT 130000 145 1800 N/A
2002-01-06 N/A MAYALLKPNO 40000 100 1800 N/A

B.W.Carney et al.,AJ, 125, 293, 2003(ADS)

Spectroscopic Binaries, Velocity Jitter, and Rotation in Field Metal-poor Red Giant and Red Horizontal-Branch Stars


Stellar Parameters

Teff : 5350 log g : 2.5

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
FeN/A-1.66......-1.66...5.84Fe

Binary Parameters

Vrad -57.18

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 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 2446006.67547 MMT N/A N/A N/A -57.75+-0.43
N/A 2446361.77031 TILLINGHAST N/A N/A N/A -56.78+-0.38
N/A 2446369.79985 TILLINGHAST N/A N/A N/A -56.58+-0.34
N/A 2446393.62169 MMT N/A N/A N/A -58.04+-0.49
N/A 2446398.57495 MMT N/A N/A N/A -57.44+-0.36
N/A 2446725.71814 MMT N/A N/A N/A -57.31+-0.42
N/A 2447044.86526 TILLINGHAST N/A N/A N/A -56.77+-0.36
N/A 2447345.98195 MMT N/A N/A N/A -57.01+-0.36
N/A 2447696.97977 MMT N/A N/A N/A -57.25+-0.35
N/A 2448141.87887 TILLINGHAST N/A N/A N/A -57.03+-0.42
N/A 2449195.95998 TILLINGHAST N/A N/A N/A -57.25+-0.48
N/A 2449265.79665 TILLINGHAST N/A N/A N/A -56.87+-0.46
N/A 2450647.99077 MMT N/A N/A N/A -57.34+-0.41

L.Zhang et al.,AAP, 528, A92, 2011(ADS)

The Hamburg/ESO R-process Enhanced Star survey (HERES). VI. The Galactic chemical evolution of silicon


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-2.01-0.436.51-1.92-0.346.51C
FeN/A-1.58......-1.58...5.92Fe

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 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 20000 N/A N/A N/A

J.Ren et al.,AAP, 537, A118, 2012(ADS)

The Hamburg/ESO R-process Enhanced Star survey (HERES). VII. Thorium abundances in metal-poor stars


Stellar Parameters

Teff : 5445 log g : 2.39 vturb : 2.30

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...-0.34...-1.79-0.386.64C
FeN/A-1.58......-1.41...6.09Fe
EuN/A...0.80...-0.790.62-0.27Eu
ThN/A...0.43-1.06-1.120.29-1.06Th

Position

Right Ascension : 00 05 15.30 Declination : -27 16 18.0 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2001-10-07 N/A VLT 20000 30-50 N/A N/A