CS22948-027

taken from 5 paper(s):

/W.Aoki et al.(2002)/ /V.Hill et al.(2000)/ /B.Barbuy et al.(2005)/ /G.W.Preston and C. Sneden(2001)/ /W.Aoki et al.(2007)/

W.Aoki et al.,ApJ, 567, 1166, 2002(ADS)

The Chemical Composition of Carbon-rich, Very Metal Poor Stars: A New Class of Mildly Carbon Rich Objects without Excess of Neutron-Capture Elements


Stellar Parameters

Teff : 4600 log g : 1.0 vturb : 2.2

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
Li IN/A......<1.0<-2.26<0.31<1.0Li I
CN/A...+2.0+-0.18...-0.45+-0.182.12+-0.187.98+-0.18C
NN/A...+1.8+-0.24...-0.63+-0.241.94+-0.247.20+-0.24N
Na I2...+0.68+-0.20...-1.80+-0.200.77+-0.204.44+-0.20Na I
Mg I2...+0.59+-0.11...-2.00+-0.110.57+-0.115.60+-0.11Mg I
Ca I2...+0.53+-0.16...-2.02+-0.160.55+-0.164.32+-0.16Ca I
Ti II2...+0.62+-0.18...-1.88+-0.180.69+-0.183.07+-0.18Ti II
Cr I4...+0.22+-0.14...-2.32+-0.140.25+-0.143.32+-0.14Cr I
Fe I30-2.57+-0.23......-2.57+-0.23...4.93+-0.23Fe I
Fe II4-2.56+-0.28......-2.56+-0.28...4.94+-0.28Fe II
Y II1...+0.80+-0.20...-1.74+-0.200.83+-0.200.47+-0.20Y II
Ba II3...+1.85+-0.14...-0.77+-0.141.80+-0.141.41+-0.14Ba II
La II1...+1.91+-0.15...-0.59+-0.151.98+-0.150.51+-0.15La II
Ce II4...+1.99+-0.14...-0.58+-0.141.99+-0.141.00+-0.14Ce II
Pr II3...+1.85+-0.14...-0.73+-0.141.84+-0.14-0.01+-0.14Pr II
Nd II21...+1.69+-0.12...-0.80+-0.121.77+-0.120.62+-0.12Nd II
Eu II1...+1.57...-1.011.56-0.49Eu II

Isotopic Ratio

12C/13C 10

Position

Right Ascension : 21 37 45.77 Declination : -39 27 22.3 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
1994-06 2449520 ANGLO 40000 51 75*3 -63.33+-0.56

V.Hill et al.,AAP, 353, 557, 2000(ADS)

Heavy-element abundances in the CH/CN-strong very metal-poor stars CS 22948-27 and CS 29497-34


Stellar Parameters

Teff : 4800 log g : 1.80 vturb : 1.50

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...+1.9...-0.452.027.98CH
C2N/A...+2.05...-0.302.178.13C2
CNN/A...+1.8...-0.531.947.30CN
Na2...>0.56...>-1.82>0.65>4.42Na
Mg1...+0.39...-2.100.375.50Mg
Fe IN/A-2.47......-2.47...5.03Fe I
Fe IIN/A-2.46......-2.46...5.04Fe II
Sr1...0.90...-1.471.001.40Sr
Y2...1.00+-0.28...-1.44+-0.281.03+-0.280.77+-0.28Y
Ba5...2.26+-0.09...-0.26+-0.092.21+-0.091.92+-0.09Ba
La2...2.32+-0.53...-0.08+-0.532.39+-0.531.02+-0.53La
Ce1...2.20...-0.272.201.31Ce
Pr2...1.65...-0.831.64-0.11Pr
Nd11...2.22+-0.35...-0.17+-0.352.30+-0.351.25+-0.35Nd
Eu2...2.10...-0.382.090.14Eu
Dy1...1.60...-0.831.640.27Dy

Binary Parameters

Vrad -67.4

Position

Right Ascension : 21 37 45.77 Declination : -39 27 22.3 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
1995-09-15 N/A EMMIESO 30000 170 120min -63.9
1995-09-17 N/A EMMIESO 30000 180 105min -64.7
1995-11-03 N/A EMMIESO 30000 58 60min -62.3
1995-11-04 N/A EMMIESO 30000 56 60min -62.7
1995-11-05 N/A EMMIESO 30000 53 55min -62.8
1996-10-01 N/A CASPECESO 21000 110 90min -60.6
1996-10-02 N/A CASPECESO 21000 150 120min -67.3
1999-07-03 N/A FEROSESO 48000 30 30min -68.1

B.Barbuy et al.,AAP, 429, 1031, 2005(ADS)

New analysis of the two carbon-rich stars CS 22948-27 and CS 29497-34: Binarity and neutron capture elements


Stellar Parameters

Teff : 4800 log g : 1.8 vturb : 1.5

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
CHSynt-0.03+2.438.490.062.538.49CH
CNSynt-0.71+1.757.21-0.621.857.21CN
Na I2-1.90+-0.17+0.57+-0.174.43+-0.17-1.81+-0.170.66+-0.174.43+-0.17Na I
Mg I4-2.16+-0.28+0.31+-0.285.42+-0.28-2.18+-0.280.29+-0.285.42+-0.28Mg I
Al I1-2.62-0.153.85-2.60-0.133.85Al I
Ca I9-1.93+-0.15+0.54+-0.154.43+-0.15-1.91+-0.150.56+-0.154.43+-0.15Ca I
Ti I10-2.13+-0.28+0.34+-0.282.89+-0.28-2.06+-0.280.41+-0.282.89+-0.28Ti I
Ti II20-1.97+-0.20+0.50+-0.203.05+-0.20-1.90+-0.200.57+-0.203.05+-0.20Ti II
Cr I3-2.62+-0.10-0.15+-0.103.05+-0.10-2.59+-0.10-0.12+-0.103.05+-0.10Cr I
Fe IN/A-2.47......-2.47...5.03Fe I
Fe IIN/A-2.46......-2.46...5.04Fe II
Ni I1-2.48-0.013.77-2.450.023.77Ni I
Zn I1-2.11+0.362.49-2.070.402.49Zn I
Sr IISynt-1.57+0.901.35-1.520.951.35Sr II
Y IISynt-1.47+1.000.87-1.341.130.87Y II
Ba IISynt-0.21+2.261.92-0.262.211.92Ba II
La IISynt-0.15+2.321.02-0.082.391.02La II
Ce IISynt-0.27+2.201.31-0.272.201.31Ce II
Pr IISynt-0.63+1.870.08-0.641.830.08Pr II
Nd IISynt-0.25+2.221.25-0.172.301.25Nd II
Eu IISynt-0.59+1.88-0.08-0.601.87-0.08Eu II
Dy IISynt-0.87+1.600.27-0.831.640.27Dy II
Pb ISynt+0.25+2.722.200.162.632.20Pb I

Binary Parameters

Binarity Positive
Vrad -69.9+-0.3
Period 426.5

Position

Right Ascension : 21 37 45.77 Declination : -39 27 22.3 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2449976 EMMIESO 30000 120min -63.9+-1.5
2449978 EMMIESO 30000 105min -64.7+-1.5
2450025 EMMIESO 30000 60min -62.3+-1.5
2450026 EMMIESO 30000 60min -62.7+-1.5
2450027 EMMIESO 30000 55min -62.8+-1.5
2450358 CASPECESO 21000 90min -60.6+-3.0
2450359 CASPECESO 21000 120min -67.3+-3.0
2451384 FEROSESO 48000 30min -67.4+-1.0
2451394 FEROSESO 48000 30min -68.1+-1.0
2451575 FEROSESO 48000 30min -67.1+-1.0
2453142 HARPSESO 100000 50,100 80min -69.0+-0.3

G.W.Preston et al.,AJ, 122, 1545, 2001(ADS)

The Incidence of Binaries among Very Metal-poor Carbon Stars


Stellar Parameters

Teff : 4600 log g : 0.8 vturb : 2.3

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...2.1...-0.572.227.86CH
CNN/A...1.1...-1.551.246.28CN
Na I2...0.74...-1.960.834.28Na I
Mg I1...0.35...-2.460.335.14Mg I
Ti II2...0.15...-2.570.222.38Ti II
Fe I11-2.79-0.22...-2.79-0.224.71Fe I
Fe II2-2.350.22...-2.350.225.15Fe II
Ba II3...1.67...-1.171.621.01Ba II

Isotopic Ratio

12C/13C 20

Binary Parameters

Binarity Positive
Vrad -66.2
Period 505

Position

Right Ascension : 21 37 45.77 Declination : -39 27 22.3 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 2448826.69 FRUTTI 30000 N/A N/A -67.7
N/A 2448827.80 FRUTTI 30000 N/A N/A -67.7
N/A 2448829.80 FRUTTI 30000 N/A N/A -67.5
N/A 2448831.79 FRUTTI 30000 N/A N/A -67.7
N/A 2449942.73 FRUTTI 30000 N/A N/A -64.4
N/A 2450292.65 FRUTTI 30000 N/A N/A -69.2
N/A 2450705.52 FRUTTI 30000 N/A N/A -69.8
N/A 2450996.82 FRUTTI 30000 N/A N/A -69.8
N/A 2451033.62 FRUTTI 30000 N/A N/A -72.1
N/A 2451358.82 FRUTTI 30000 N/A N/A -66.2
N/A 2451384.68 FRUTTI 30000 N/A N/A -67.6
N/A 2451385.71 FRUTTI 30000 N/A N/A -67.5
N/A 2451386.69 FRUTTI 30000 N/A N/A -67.9

W.Aoki et al.,ApJ, 655, 492, 2007(ADS)

Carbon-enhanced Metal-poor Stars. I. Chemical Compositions of 26 Stars


Stellar Parameters

Teff : 5000 log g : 1.9 vturb : 2.0

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...2.12+-0.208.3+-0.20-0.13+-0.202.13+-0.208.3+-0.20C
CNN/A...2.43+-0.358.0+-0.350.17+-0.352.43+-0.358.0+-0.35CN
Na I2...0.92+-0.134.88+-0.13-1.36+-0.130.90+-0.134.88+-0.13Na I
Mg I1...0.55+-0.145.87+-0.14-1.73+-0.140.53+-0.145.87+-0.14Mg I
Ca I5...0.57+-0.194.67+-0.19-1.67+-0.190.59+-0.194.67+-0.19Ca I
Ti I3...0.60+-0.133.28+-0.13-1.67+-0.130.59+-0.133.28+-0.13Ti I
Ti II4...0.68+-0.263.37+-0.26-1.58+-0.260.68+-0.263.37+-0.26Ti II
Cr I2...-0.12+-0.123.31+-0.12-2.33+-0.12-0.07+-0.123.31+-0.12Cr I
Fe I25-2.21+-0.28...5.24+-0.28-2.26+-0.28...5.24+-0.28Fe I
Fe II2-2.23+-0.16...5.22+-0.16-2.28+-0.16...5.22+-0.16Fe II
Zn I1...0.31+-0.212.69+-0.21-1.87+-0.210.39+-0.212.69+-0.21Zn I
Ba II2...2.31+-0.152.27+-0.150.09+-0.152.35+-0.152.27+-0.15Ba II

Isotopic Ratio

12C/13C 10+-3

Binary Parameters

Vrad -62.49

Position

Right Ascension : 21 37 45.77 Declination : -39 27 22.3 Galactic Longitude (l) : N/A Galactic Latitude (b) : N/A

Observing Log

Date of Observation JD Facility Resolution S/N Exposure Time Vrad
2002-10-26 N/A SUBARUHDS 50000 N/A 600 -62.49+-0.09