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 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:
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FileName Lrecl Records Explanations
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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
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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.
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Byte-by-byte Description of file: kurgen.col
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Bytes Format Units Label Explanations
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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
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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