J/AJ/129/433 Abundances and equivalent widths of 14 Cepheids (Kovtyukh+, 2005)
Phase-dependent variation of the fundamental parameters of cepheids.
II. Periods longer than 10 days.
Kovtyukh V.V., Andrievsky S.M., Belik S.I., Luck R.E.
<Astron. J., 129, 433-453 (2005)>
=2005AJ....129..433K 2005AJ....129..433K
ADC_Keywords: Stars, variable ; Abundances ; Equivalent widths
Keywords: Cepheids - stars: abundances
Abstract:
We present the results of a detailed multiphase spectroscopic analysis
of 14 classical Cepheids with pulsation periods longer than 10 days.
For each star, we have derived phased values of effective temperature,
surface gravity, microturbulent velocity, and elemental abundances. We
show that the elemental abundance results for these Cepheids are
consistent for all pulsational phases.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 64 186 Observing log
table6.dat 55 122016 Line equivalent widths
table7.dat 33 6138 Per-phase abundances
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See also:
J/A+A/381/32 : Galactic Cepheid abundances (Andrievsky+, 2002)
J/A+A/392/491 : Galactic abundance gradient. III. (Andrievsky+, 2002)
J/A+A/413/159 : Galactic abundance gradient. V. (Andrievsky+, 2004)
J/AJ/113/1073 : Abundances in Cepheid Variables (Fry+ 1997)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name Cepheid name
8- 18 F11.8 d Per Period
20- 26 A7 --- Tel Telescope
28- 37 A10 "YYYY-MM-DD" ObsDate Date of the observation (YYYY-MM-DD)
39- 49 F11.3 d JD Julian Date of observation
51- 55 F5.3 --- Phase Phase of Cepheid
57- 60 I4 s ExpTime ? Exposure time
62- 64 I3 --- S/N Mean signal-to-noise ratio
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name Cepheid name
8- 13 A6 --- Ion Ion
15- 22 F8.3 0.1nm lambda Wavelength
24- 27 F4.1 --- Z Atomic number
28- 29 A2 --- --- [00]
31- 36 F6.3 eV EP Lower excitation potential
38- 44 F7.3 --- loggf Oscillator strength
46- 50 F5.3 --- Phase Phase in Cepheid
52- 55 I4 pm EW ? Line equivalent width at Phase
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 --- Z Atomic number (1)
6- 11 A6 --- Name Cepheid name
14- 18 F5.3 --- Phase Phase
20- 24 F5.2 [Sun] Abund ?=-9.99 Abundance of element Z
26- 29 F4.2 [Sun] e_Abund ?=0 Standard deviation of Abundance
31- 33 I3 --- o_Abund ?=0 Number of lines for the species
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Note (1): The first decimal is 0 for the neutral atom, and 1 for the ionized
atom (e.g. 26.0 = Fe I and 26.1 = Fe II).
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History:
From electronic version of the journal
References:
Luck & Andrievsky, Paper I 2004AJ....128..343L 2004AJ....128..343L
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 25-Aug-2005