J/MNRAS/389/1336 Reddenings of FGK supergiants & Cepheids (Kovtyukh+, 2008)
Reddenings of FGK supergiants and classical Cepheids from spectroscopic data.
Kovtyukh V.V., Soubiran C., Luck R.E., Turner D.G., Belik S.I.,
Andrievsky S.M., Chekhonadskikh F.A.
<Mon. Not. R. Astron. Soc., 389, 1336-1344 (2008)>
=2008MNRAS.389.1336K 2008MNRAS.389.1336K
ADC_Keywords: Stars, supergiant ; Stars, variable ; Reddening
Keywords: stars: fundamental parameters - supergiants - Cepheids
Abstract:
Accurate and homogeneous atmospheric parameters (Teff, logg, Vt,
[Fe/H]) are derived for 74 FGK non-variable supergiants from
high-resolution, high signal-to-noise ratio, echelle spectra.
Extremely high precision for the inferred effective temperatures
(10-40K) is achieved by using the line-depth ratio method. The new
data are combined with atmospheric values for 164 classical Cepheids,
observed at 675 different pulsation phases, taken from our previously
published studies.
Description:
The spectra of the FGK supergiants studied here were obtained using
the 1.93-m telescope of the Haute-Provence Observatoire (France)
equipped with the echelle spectrograph ELODIE and retrieved from its
online archive of spectra.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 41 74 Computed colour excesses for FGK supergiants
table2.dat 59 164 Computed colour excesses for classical Cepheids
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See also:
J/A+A/404/423 : BVI photometry of Galactic Cepheids (Tammann+, 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name (HD or BD)
12- 15 I4 K Teff Effective temperature
17- 20 F4.2 [cm/s2] logg Surface gravity
21 A1 --- u_logg Uncertainty flag on logg
24- 28 F5.2 km/s Vt Microturbulent velocity
30- 34 F5.2 --- [Fe/H] Metallicity
36- 41 F6.3 mag E(B-V) B-V colour excess (1)
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Note (1): Negative E(B-V) values are set to zero.
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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- 10 A10 --- Name Star name
14- 22 F9.6 d Per Period of Cepheid
24- 29 F6.3 mag E(B-V) ?=- Computed B-V colour excess
30 A1 --- u_E(B-V) Uncertainty flag on E(B-V)
32- 36 F5.3 mag e_E(B-V) ?=- rms uncertainty on E(B-V)
39- 40 I2 --- Nsp Number of spectra
42- 47 F6.3 --- E(B-V)1 ?=- E(B-V) from Fernie et al.,
1995IBVS.4148....1F 1995IBVS.4148....1F
49- 53 F5.3 --- E(B-V)2 ?=- E(B-V) from Tammann et al., 2003,
Cat. J/A+A/404/423
55- 59 F5.3 --- E(B-V)3 ?=- E(B-V) from Lanet & Caldwell,
2007MNRAS.377..147L 2007MNRAS.377..147L
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 19-Oct-2009