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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
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:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        41       74   Computed colour excesses for FGK supergiants
table2.dat        59      164   Computed colour excesses for classical Cepheids


See also:
  J/A+A/404/423 : BVI photometry of Galactic Cepheids (Tammann+, 2003)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   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)

Note (1): Negative E(B-V) values are set to zero.



Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   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
  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


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    19-Oct-2009