Spherical opacity sampling model atmospheres for M-giants and supergiants. II - A grid

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Late Stars, M Stars, Opacity, Stellar Atmospheres, Stellar Mass, Supergiant Stars, Giant Stars, Local Thermodynamic Equilibrium, Stellar Composition, Stellar Models, Titanium Oxides, Vanadium Oxides, Water

Scientific paper

A grid is presented of spherically symmetric model atmospheres for M-type giants and supergiants, covering the range T(eff) between 3000 and 4000 K, log g between -0.5 and 1.5 for 1, 2, and 5 solar masses, with some additional cooler models. The model atmospheres were computed using the program, methods, and data described by Plez et al. (1992). New line-lists, calculated from up-to-date data for the TiO, VO, and H2O molecules, are included in the opacities.

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