Journal Article

Stellar models for very low-mass main-sequence stars: the role of model atmospheres

E. Brocato, S. Cassisi and V. Castellani

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 295, issue 3, pages 711-724
Published in print April 1998 | ISSN: 0035-8711
Published online April 1998 | e-ISSN: 1365-2966 | DOI:
Stellar models for very low-mass main-sequence stars: the role of model atmospheres

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We present very low-mass stellar models as computed using non-grey model atmospheres for selected assumptions about the stellar metallicities. The role of atmospheres is discussed and the models are compared with models based on the Eddington approximation, and with similar models that have appeared in the recent literature. Theoretical predictions concerning both the HR diagram location and the mass–luminosity relation are presented and discussed in terms of expectations in selected photometric bands. Comparison with available observational data concerning both galactic globular clusters and dwarfs in the solar neighbourhood reveals a satisfactory agreement together with the existence of some residual mismatches.

Keywords: stars: atmospheres; stars: evolution; stars: low-mass, brown dwarfs; stars: Population II; globular clusters: general

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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