Barnes--Evans relations for late--type giants and dwarfs

Details Barnes--Evans relations for late--type giants and dwarfs Barnes--Evans relations for late--type giants and dwarfs

1999-06-22

arxiv.org/abs/astro-ph/9906350v1

Astron.Astrophys.348:524-532,1999

Astronomy and Astrophysics

Astrophysics

10 pages, Latex file, uses aa.cls, accepted for publication in A&A

Scientific paper

The visual surface brightness of K/M giants and dwarfs with near-solar metallicity differ slightly in agreement with the gravity effects predicted by recent theoretical models. We show that M-dwarfs display also a metallicity dependence of the surface brightness in the infrared $K$-band in agreement with theory. Based on these results, we present improved Barnes-Evans type relations and estimate the radii of 60 single or presumed M and K-dwarfs

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