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J/A+A/381/32        Galactic Cepheid abundances             (Andrievsky+, 2002)

Using Cepheids to determine the Galactic abundance gradient. I. The solar neighbourhood. Andrievsky S.M., Kovtyukh V.V., Luck R.E., Lepine J.R.D., Bersier D., Maciel W.J., Barbuy B., Klochkova V.G., Panchuk V.E., Karpischek R.U. <Astron. Astrophys. 381, 32 (2002)> =2002A&A...381...32A (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Stars, supergiant ; Abundances Keywords: stars: abundances - stars: supergiants - Galaxy: abundances - Galaxy: evolution Description: File table1 contains information about the program stars and spectra . Note that we also added to our sample two distant Cepheids (TV Cam and YZ Aur) which were previously analyzed by Harris & Pilachowski (1984ApJ...282..655H). File table2 contains relative-to-solar averaged elemental abundances (i.e. [El/H]) for program stars. First column gives the name of the star, other columns list the abundance data for all investigated elements. File tablea1 contains an Appendix table with elemental abundances from individual ions (ions are listed in the first column). For each star the following information is given: relative-to-solar abundance of a given ion (i.e. [M/H]), sigma-value, number of the lines used in analysis, absolute abundance of a given ion (M/H) in the scale where logA(H)=12.00. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 73 236 Program Cepheids, their spectra and results for individual phases Star table2.dat 164 75 Averaged relative-to-solar elemental abundance for program Cepheids Star tablea1.dat 50 2634 Elemental abundances from individual ions table12.tex 108 554 LaTeX version of table1 and 2 tablea1.tex 117 1011 LaTeX version of tablea1
See also: J/AJ/113/1073 : Abundances in Galactic Cepheid Variables (Fry+ 1997) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Star Star name 13- 14 A2 --- n_Star [s: ] "s" : s-Cepheid, "s:" : s-Cepheids, but not confirmed 16- 22 F7.4 d P Period 24- 36 F13.5 d HJD Heliocentric Julian date 38- 42 F5.3 --- phi [0/1[? Phase 44- 52 A9 --- Tel Telescope (1) 54- 57 I4 K Teff Effective temperature 59- 62 F4.2 [cm/s2] logg Surface gravity 64- 67 F4.2 km/s Vt Microturbulent velocity 69- 73 F5.2 [Sun] [Fe/H] Metallicity
Note (1): Telescopes: MDO 2.1m - McDonald Observatory (USA), Struve 2.1-m reflector, R=60000, S/N>100. KPNO 4m - Kitt Peak National Observatory (USA), 4-m and coude-feed telescope, R=30000 and 80000 respectively, S/N≃150 (except for CV Mon with a S/N of about 50). CTIO 4m - Cerro Tololo Inter-American Observatory (Chile), 4-m telescope, R=30000, S/N>100. MSO 74in - Mount Stromlo Observatory (Australia), 74-inch telescope, R=56000, S/N≤50. SAORAS 6m - Special Astrophysical Observatory of the Russian Academy of Sciences (Russia), 6-m telescope, R=14000 and 25000, S/N≃70-100 (except for DF Cas, V924 Cyg and TX Del, where the S/N is below 70). OHP 1.93m - Haute-Provence Observatoire (France), 1.93-m telescope, R=40000 , S/N>150.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Star Star name 13- 14 A2 --- n_Star [s: ] "s" : s-Cepheid, "s:" : s-Cepheids, but not confirmed 16- 20 F5.2 [Sun] C ? C averaged relative-to-solar elemental abundance 22- 26 F5.2 [Sun] O ? O averaged relative-to-solar elemental abundance 28- 32 F5.2 [Sun] Na ? Na averaged relative-to-solar elemental abundance 34- 38 F5.2 [Sun] Mg ? Mg averaged relative-to-solar elemental abundance 40- 44 F5.2 [Sun] Al ? Al averaged relative-to-solar elemental abundance 46- 50 F5.2 [Sun] Si ? Si averaged relative-to-solar elemental abundance 52- 56 F5.2 [Sun] S ? S averaged relative-to-solar elemental abundance 58- 62 F5.2 [Sun] Ca ? Ca averaged relative-to-solar elemental abundance 64- 68 F5.2 [Sun] Sc ? Sc averaged relative-to-solar elemental abundance 70- 74 F5.2 [Sun] Ti ? Ti averaged relative-to-solar elemental abundance 76- 80 F5.2 [Sun] V ? V averaged relative-to-solar elemental abundance 82- 86 F5.2 [Sun] Cr ? Cr averaged relative-to-solar elemental abundance 88- 92 F5.2 [Sun] Mn ? Mn averaged relative-to-solar elemental abundance 94- 98 F5.2 [Sun] Fe ? Fe averaged relative-to-solar elemental abundance 100-104 F5.2 [Sun] Co ? Co averaged relative-to-solar elemental abundance 106-110 F5.2 [Sun] Ni ? Ni averaged relative-to-solar elemental abundance 112-116 F5.2 [Sun] Cu ? Cu averaged relative-to-solar elemental abundance 118-122 F5.2 [Sun] Zn ? Zn averaged relative-to-solar elemental abundance 124-128 F5.2 [Sun] Y ? Y averaged relative-to-solar elemental abundance 130-134 F5.2 [Sun] Zr ? Zr averaged relative-to-solar elemental abundance 136-140 F5.2 [Sun] La ? La averaged relative-to-solar elemental abundance 142-146 F5.2 [Sun] Ce ? Ce averaged relative-to-solar elemental abundance 148-152 F5.2 [Sun] Nd ? Nd averaged relative-to-solar elemental abundance 154-158 F5.2 [Sun] Eu ? Eu averaged relative-to-solar elemental abundance 160-164 F5.2 [Sun] Gd ? Gd averaged relative-to-solar elemental abundance
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Star Star name 13- 14 I2 --- Nspect Number of analyzed spectra 16- 21 F6.3 d Per Period of Star 1 23- 29 A7 --- Ion Ion 31- 35 F5.2 [Sun] [M/H] ? Relative-to-solar metal abundance 37- 40 F4.2 [Sun] e_[M/H] ? rms uncertainty on [M/H]1 42- 45 I4 --- N[M/H] ? Number of the lines used in analysis 47- 50 F4.2 --- (M/H) ? Absolute abundance of a given ion (M/H) in the scale where logA(H)=12.00
Acknowledgements: Sergei Andrievsky
(End) Patricia Bauer [CDS] 14-Dec-2001
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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