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J/A+A/509/A93       Carbon-enhanced metal-poor stars         (Masseron+, 2010)

A holistic approach to carbon-enhanced metal-poor stars. Masseron T., Johnson J.A., Plez B., Van Eck S., Primas F., Goriely S., Jorissen A. <Astron. Astrophys., 509, A93 (2010)> =2010A&A...509A..93M
ADC_Keywords: Stars, population II ; Stars, metal-deficient ; Abundances Keywords: stars: abundances - stars: AGB and post-AGB - stars: population II Abstract: Carbon-enhanced metal-poor (CEMP) stars are known to have properties that reflect the nucleosynthesis of the first low- and intermediate- mass stars, because most have been polluted by a now-extinct AGB star. By considering abundances in the various CEMP subclasses separately, we try to derive parameters (such as metallicity, mass, temperature, and neutron source) characterising AGB nucleosynthesis from the specific signatures imprinted on the abundances, and separate them from the impact of thermohaline mixing, first dredge-up, and dilution associated with the mass transfer from the companion. To place CEMP stars in a broader context, we collect abundances for about 180 stars of various metallicities (from solar to [Fe/H]=-4), luminosity classes (dwarfs and giants), and abundance patterns (e.g. C-rich and poor, Ba-rich and poor), from both our own sample and the literature. Description: We compiled abundances from analyses of high-resolution spectra (R>40000) of CEMP stars (Tables 1 and 2), Ba stars, and non-C-enhanced metal-poor stars (Tables 3 and 4). C-rich stars are defined as stars with [C/Fe]>0.9. In this paper, all plots are compiled exclusively of data from these tables, including our own data from Paper II (Masseron et al., in prep.). All these data are renormalised by the Asplund (2005ARA&A..43..481A) solar abundances. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 106 149 Abundances of light elements in carbon-enhanced metal-poor stars from literature table2.dat 102 149 Abundances of neutron-capture elements in carbon enhanced metal-poor stars from literature table3.dat 106 76 Abundances of light elements in non-carbon-enhanced metal-poor stars ([C/Fe]<0.9) table4.dat 102 76 Abundances of neutron-capture elements in non-carbon enhanced metal-poor stars ([C/Fe]<0.9) refs.dat 100 51 References
See also: J/A+A/290/885 : Abundances of very metal-poor stars (Primas+, 1994) J/A+A/300/751 : Metal-poor stars spectroscopy. II (Axer+, 1995) J/A+A/314/191 : Atmospheric parameters in metal-poor stars I (Gratton+, 1996) J/A+A/350/955 : Atmospheric parameters in metal-poor stars II (Gratton+, 1999) J/A+A/356/238 : Atmospheric parameters in metal-poor stars III (Carretta+ 2000) J/A+A/354/169 : Metal-poor field stars abundances (Gratton+, 2000) J/A+A/440/321 : Chemical abundances in 43 metal-poor stars (Jonsell+, 2005) J/A+A/449/127 : Chemical abundances of 32 mildly metal-poor stars (Zhang+ 2006) Byte-by-byte Description of file: table[13].dat
Bytes Format Units Label Explanations
1- 3 A3 --- Type [Ba rI rII] Star type (G1) 5- 19 A15 --- Name Object name 21- 24 I4 K Teff Effective temperature 26- 30 F5.2 [cm/s2] logg Gravity surface 32- 36 F5.2 [Sun] [Fe/H] Metallicity, preferentially from FeI 38- 41 F4.2 [Sun] e_[Fe/H] ?=- rms uncertainty on [Fe/H] 43- 47 F5.2 [Sun] [C/Fe] ?=- Carbon abundances from preferencially CH determination 49- 52 F4.2 [Sun] e_[C/Fe] ?=- rms uncertainty on [C/Fe] 54 A1 --- l_12C/13C Limit flag on 12C/13C 55- 56 I2 [Sun] 12C/13C ?=- 12C/13C carbon isotope ratio 58- 61 F4.1 [Sun] e_12C/13C ?=- rms uncertainty on 12C/13C 62 A1 --- n_12C/13C [us] 64- 68 F5.2 [Sun] [N/Fe] ?=- Nitrogen abundance preferentially from CN 70- 73 F4.2 [Sun] e_[N/Fe] ?=- rms uncertainty on [N/Fe] 75- 76 A2 --- n_[O/Fe] Measurements from OI triplet (OI) or OH lines (OH) 78 A1 --- l_[O/Fe] Limit flag on [O/Fe] 79- 83 F5.2 [Sun] [O/Fe] ?=- Oxygen abundance (1) 85- 88 F4.2 [Sun] e_[O/Fe] ?=- rms uncertainty on [O/Fe] 90- 94 F5.2 [Sun] [O/Fe]n ?=- Non-LTE corrections of OI triplet measurement according to Takeda et al., 2003, Cat. J/A+A/402/343 (when applicable) 95 A1 --- n_[O/Fe]n [N] N for NaN 97-101 F5.2 [Sun] [Mg/Fe] ?=- Magnesium abundance 103-106 F4.2 [Sun] e_[Mg/Fe] ?=- rms uncertainty on [Mg/Fe]
Note (1): By default, the oxygen measurement comes from the [OI] line at 630nm.
Byte-by-byte Description of file: table[24].dat
Bytes Format Units Label Explanations
1- 3 A3 --- Type [Ba rI rII] Star type (G1) 5- 19 A15 --- Name Object name 21 A1 --- l_[Ba/Fe] Limit flag on [Ba/Fe] 22- 26 F5.2 [Sun] [Ba/Fe] ?=- Barium (Z=56) abundance 28- 31 F4.2 [Sun] e_[Ba/Fe] ?=- rms uncertainty on [Ba/Fe] 33 A1 --- l_[La/Fe] Limit flag on [La/Fe] 34- 38 F5.2 [Sun] [La/Fe] ?=- Lanthane (Z=57) abundances 40- 43 F4.2 [Sun] e_[La/Fe] ?=- rms uncertainty on [La/Fe] 45 A1 --- l_[Ce/Fe] Limit flag on [Ce/Fe] 46- 50 F5.2 [Sun] [Ce/Fe] ?=- Cerium (Z=58) abundance 52- 55 F4.2 [Sun] e_[Ce/Fe] ?=- rms uncertainty on [Ce/Fe] 57 A1 --- l_[Eu/Fe] Limit flag on [Eu/Fe] 58- 62 F5.2 [Sun] [Eu/Fe] ?=- Europium (Z=63) abundance 64- 67 F4.2 [Sun] e_[Eu/Fe] ?=- rms uncertainty on [Eu/Fe] 69 A1 --- l_[Pb/Fe] Limit flag on [Pb/Fe] 70- 74 F5.2 [Sun] [Pb/Fe] ?=- Lead (Z=82) abundance 76- 79 F4.2 [Sun] e_[Pb/Fe] ?=- rms uncertainty on [Pb/Fe] 81- 85 A5 --- Class Classification from Fig. (2) 87- 90 A4 --- rSun Solar abundances reference (1) 92-102 A11 --- Ref References, in refs.dat file
Note (1): Solar abundances reference adopted in the original reference source as follows:: An89 = Anders & Grevesse, 1989, Geochim. Cosmochim. Acta, 53, 197 Gr96 = Grevesse et al., 1996, SP Conf. Ser., 99, 117 Gr98 = Grevesse & Dauval, 1998, Space Sci. Rev., 85, 161 Gr20 = Grevesse et al., 2000, Solar Abundances As05 = Asplund, 2005ARA&A..43..481A Note (2): classes adopted in the paper for C-enhanced stars, as follows: r = [Ba/Eu]<0 rI = [Ba/Eu]<0 and [Eu/Fe]<1 rII = [Ba/Eu]<0 and [Eu/Fe]>1 s = [Ba/Eu]>0 and [Ba/Fe]>1 low-s = [Ba/Eu]>0 and [Ba/Fe]<1 rs = [Ba/Eu]>0 and [Eu/Fe]<1 no = [Ba/Fe]<1
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- BibCode BibCode 24- 40 A17 --- Aut Author's name 42-100 A59 --- Com Comments
Global notes: Note (G1): For non-Carbon enhanced stars, the type is as follows: Ba = Ba star (metal-rich counterparts of CEMP-s stars) rI = Metal-poor star with 0.3≤[Eu/Fe]≤+1.0 and [Ba/Eu]<0 rII = Metal-poor star with [Eu/Fe]>+1.0 and [Ba/Eu]<0
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Apr-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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