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VI/78 Theoretical Stellar Flux Spectra for F- to K-type Stars (Buser+ 1992)
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Beginning of ReadMe :VI/78 Theoretical Stellar Flux Spectra for F- to K-type Stars (Buser+ 1992)
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A Library of Theoretical Stellar Flux Spectra. I.
Synthetic UBVRI photometry and the metallicity scale for F- to K-type stars
BUSER R., KURUCZ R.L.
<Astron. Astrophys. 264, 557 (1992)>
=1992A&A...264..557B
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ADC_Keywords: Models, atmosphere ; Stars, late-type ;
Description:
In conjunction with Kurucz' (1979a,b) models for O to G stars,
the present models for F- to K- stars provide an extensive,
quasi-homogeneous grid of low-resolution theoretical flux
spectra for a significant range in stellar parameters covering
mostly of the observed HR diagram.
The file bklate.dat contains 242 theoretical model atmosphere
flux distributions for late-type stars. These flux distributions
were calculated by Buser & Kurucz in 1983-5 using published and
unpublished models by Gustafsson and his associates. Please
refer to the publication (A&A 264, 447) for a full description
of the calculations and a discussion of synthetic UBVRI photometry
computed from these models.
The models cover the following ranges in the parameter space:
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number fraction of hydrogen xH =0.9 all models
turbulent velocity [km/s] vturb =2.00 234 models
vturb =5.00 8 models
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3750 <= Teff <= 6000 (K)
0.75 <= log.g <= 5.25 (cm/s/s)
-3.00 <= [Fe/H] <= 0.50 (dex)
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Notice that the model sequence does NOT strictly follow an
orderly pattern in parameter space, because the present
file was composed from several original files having their
individual parameter sequences. The last model (#242) is
the solar model.
Note that the present file still contains 8 models (out of a total
of 242) which have turbulent velocities vturb=5.00 km/s, but
whose flux distributions have n o t actually been computed
for this value of vturb (=5.00 km/s). Hence, for these models,
the flux distributions given in the present file are erroneous
and should not be used at all. It is suggested that the user
d e l e t e them from the file altogether; for the user's
convenience, these models are marked on the accompanying list.
References:
Kurucz R.L., 1979a, ApJS 40, 1 (CDS Catalogue VI/39)
Kurucz R.L., 1979b, in: "Problems of Calibration of Multicolor
Photometric Systems", Philip A.G.Davis (ed.),
Dudley Obs. Rep. 14, p. 363