SIMBAD references

1996A&A...313..873A - Astronomy and Astrophysics, volume 313, 873-890 (1996/9-3)

The empirical scale of temperatures of the low main sequence (F0V-K5V).

ALONSO A., ARRIBAS S. and MARTINEZ-ROGER C.

Abstract (from CDS):

We have calibrated the effective temperatures of the low main sequence stars ranging spectral types from F0 to K5 versus [Fe/H] and colours (B-V), (R-I), (V-R), (V-I), (V-K), (J-H), (J-K) and ubvy-β, using a large sample of dwarfs and subdwarfs. The effective temperatures, scaled to direct Teff determinations via reliable angular diameter measurements, were derived applying the InfraRed Flux Method with the new grid of atmosphere models developed by Kurucz (1993). We have fitted polynomial functions of the form θeff=P(colour,[Fe/H]) using the least squares method. The precision of the fits ranges from 30K for (V-K) to 154K for (J-H). The new relations have been compared to previous calibrations. We also provide the empirical intrinsic colours (U-B), (B-V), (R-I), (V-R), (V-I), (V-K), (J-H), (J-K) and β, in the ranges: 4000K<Teff<8000K and 0>[Fe/H]>-2.5.

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: Population II - stars: subdwarfs - stars: atmospheres - stars: general

Simbad objects: 123

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