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J/A+AS/122/51      B to G stars calibration in Geneva photometry (Kunzli+, 1997)
A calibration of Geneva photometry for B to G stars in terms of
Teff, logg, and [M/H]
      Kunzli M., North P., Kurucz R.L., Nicolet B.
     <Astron. Astrophys. Suppl. Ser. 122, 51 (1997)>
     =1997A&AS..122...51K      (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, Geneva ; Models, atmosphere

Keywords: stars: general, atmosphere, fundamental parameters


Description:
   We have used recent Kurucz models and many standard stars to revise
   previous calibrations of the Geneva photometric parameters in terms of
   Teff, logg, and [M/H]. In addition, new parameters pT and pG were defined,
   which are the Geneva equivalents of Stromgren's a and r parameters and
   allow to estimate Teff and logg for stars with intermediate temperature
   (spectral type A0-A3). A fortran code (calib.f) has been written, which
   applies our calibration to stars measured in the Geneva system.
   A conspicuous change in slope appears in the grid d vs B2-V1. It seems to
   be linked with the onset of convection in the superficial layers of the
   star's envelope.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
calib.doc         80       54  *Notes about the code calib
calib.f          119     1185   Source file of the code calib (FORTRAN program)
bcdci             41     5815   grids d vs B2-V1 for all metallicities
bcmci             41     2942   Grids m2 vs B2-V1 for all gravities
ptpgm10i          52      216   Grids pG vs pT for [M/H]=-1.
ptpgp00i          52      238   Grids pG vs pT for [M/H]= 0.
ptpgp10i          52      257   Grids pG vs pT for [M/H]=+1.
xcycm10i          58      360   Grids Y vs X for [M/H]=-1
xcycp00i          58      375   Grids Y vs X for [M/H]= 0.
xcycp10i          58      410   Grids Y vs X for [M/H]=+1.
kurgen.col        69     3804   The Geneva colours (uncorrected) of the Kurucz
                                 models

Note on calib.doc: bcdci, bcmci, ptpgm10i, ptpgp00i, ptpgp10i, xcycm10i,
    xcycp00i and xcycp10i files contain the numerical values of the corrected
    grids and are necessary to use the code calib.


Byte-by-byte Description of file: kurgen.col

   Bytes Format  Units  Label   Explanations

   2-  7  F6.0   K      Teff    Effective temperature
  11- 14  F4.2  [cm/s2] logg    Surface gravity
  17- 21  F5.2   [Sun]  [M/H]   Metallicity
  24- 29  F6.3   mag    [U-B]   Geneva [U-B] index
  32- 37  F6.3   mag    [V-B]   Geneva [V-B] index
  41- 45  F5.3   mag    [B1-B]  Geneva [B1-B] index
  49- 53  F5.3   mag    [B2-B]  Geneva [B2-B] index
  56- 61  F6.3   mag    [V1-B]  Geneva [V1-B] index
  64- 69  F6.3   mag    [G-B]   Geneva [G-B]  index


Courtesy: Marc Kunzli 


Notes: A new version of calib.f was installed on 26-Jun-1997, by the author.

(End)                                           Patricia Bauer [CDS] 19-Aug-1996