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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
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:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table5.dat        64      186   Observing log
table6.dat        55   122016   Line equivalent widths
table7.dat        33     6138   Per-phase abundances


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

   Bytes Format Units      Label     Explanations

   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


Byte-by-byte Description of file: table6.dat

   Bytes Format Units   Label     Explanations

   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


Byte-by-byte Description of file: table7.dat

   Bytes Format Units   Label     Explanations

   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

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).


History:
    From electronic version of the journal

References:
  Luck & Andrievsky, Paper I  2004AJ....128..343L
(End)                   Greg Schwarz [AAS], Marianne Brouty [CDS]    25-Aug-2005