J/MNRAS/434/2418 [Fe/H] of short-period Galactic Cepheids (Klagyivik+, 2013)
Determination of the iron content of Cepheids from the shape of their light
curves.
Klagyivik P., Szabados L., Szing A., Leccia S., Mowlavi N.
<Mon. Not. R. Astron. Soc., 434, 2418-2425 (2013)>
=2013MNRAS.434.2418K 2013MNRAS.434.2418K
ADC_Keywords: Stars, variable ; Abundances
Keywords: asteroseismology - stars: abundances - stars: variables: Cepheids
Abstract:
We present the study of the metallicity dependence of the Fourier
amplitude ratios R21 and R31 for the light curves of
short-period Galactic classical Cepheids in B, V, RC and IC bands.
Based on the available photometric and spectroscopic data, we
determined the relations between the atmospheric iron abundance,
[Fe/H], and the Fourier parameters. Using these relations we
calculated the photometric [Fe/H] values of all programme Cepheids
with an average accuracy of ±0.15dex. No spectroscopic iron
abundance was known before for 14 of these stars. These empirical
results provide an alternate method to determine the iron abundance of
classical Cepheids too faint for spectroscopic observations. We also
checked whether the metal-poor Cepheids of both Magellanic Clouds
follow the same relationships, and a good agreement was found.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 71 116 Fourier amplitude ratios of Galactic
classical Cepheids
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See also:
J/A+A/504/959 : Amplitudes of single-mode Cepheids (Klagyivik+, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
11- 15 F5.3 d Per Period
17- 21 F5.2 [Sun] [Fe/H] [-0.5/0.4]?=- Metallicity [Fe/H]
23- 27 F5.3 --- R21(B) ?=- Fourier amplitude ratio R21 from B band
29- 33 F5.3 --- R31(B) ?=- Fourier amplitude ratio R31 from B band
35- 39 F5.3 --- R21(V) ?=- Fourier amplitude ratio R21 from V band
41- 45 F5.3 --- R31(V) ?=- Fourier amplitude ratio R31 from V band
47- 51 F5.3 --- R21(Rc) ?=- Fourier amplitude ratio R21 from Rc band
53- 57 F5.3 --- R31(Rc) ?=- Fourier amplitude ratio R31 from Rc band
59- 63 F5.3 --- R21(Ic) ?=- Fourier amplitude ratio R21 from Ic band
65- 69 F5.3 --- R31(Ic) ?=- Fourier amplitude ratio R31 from Ic band
71 A1 --- Bin [b] Binarity flag
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History:
From electronic version of the journal
References:
Klagyivik & Szabados, Paper I 2009A&A...504..959K 2009A&A...504..959K, Cat. J/A+A/504/959
Klagyivik & Szabados, Paper II 2012A&A...537A..81S 2012A&A...537A..81S
(End) Patricia Vannier [CDS] 11-Sep-2014