J/A+AS/122/51 J/A+AS/122/51 B to G stars calibration in Geneva photometry M Kunzli P North R L Kurucz B Nicolet Astron. Astrophys. Suppl. Ser. 122 51 1997 1997A&AS..122...51K Models, atmosphere Photometry, Geneva stars: atmospheres stars: fundamental parameters stars: general 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.

Teff Effective temperature K logg Surface gravity cm/s2 [M/H] Metallicity Sun [U-B] Geneva [U-B] index mag [V-B] Geneva [V-B] index mag [B1-B] Geneva [B1-B] index mag [B2-B] Geneva [B2-B] index mag [V1-B] Geneva [V1-B] index mag [G-B] Geneva [G-B] index mag calib.doc*Notes about the code calib 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. Patricia Bauer CDS 1996Aug19Marc Kunzli <marc.kunzli@obs.unige.ch> J_A+AS_122_51.xml