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 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 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:
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FileName Lrecl Records Explanations
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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
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See also:
J/AJ/113/1073 : Abundances in Galactic Cepheid Variables (Fry+ 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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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
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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.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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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
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Acknowledgements: Sergei Andrievsky
(End) Patricia Bauer [CDS] 14-Dec-2001