Spherically Symmetric Model Atmospheres for Low‐Mass Pre–Main‐Sequence Stars with Effective Temperatures between 2000 and 6800 K | Zendy

F. Allard | Zendy; P. H. Hauschildt | Zendy; A. Schweitzer | Zendy

Open Access

Spherically Symmetric Model Atmospheres for Low‐Mass Pre–Main‐Sequence Stars with Effective Temperatures between 2000 and 6800 K

Author(s) -

F. Allard,

P. H. Hauschildt,

A. Schweitzer

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/309218

Subject(s) - stars , physics , line (geometry) , brown dwarf , spectral line , astrophysics , isotope , main sequence , low mass , astronomy , nuclear physics , mathematics , geometry

We present a grid of spherically symmetric model atmospheres for young pre-MSstars. This grid spans the parameter range $2000\K \leq \Teff \leq 6800\K$ and$2.0 \leq \logg \leq 3.5$ for $M=0.1\Msun$, appropriate for low mass stars andbrown dwarfs. A major improvement is the replacement of TiO and \water linelists with the newer line list calculated by the NASA-AMES group, for TiO(about 175 million lines of 5 isotopes) and for \water (about 350 million linesin 2 isotopes). We provide the model structures, spectra and broad-band colorsin standard filters in electronic form.Comment: ApJ, in press. Also available at ftp://calvin.physast.uga.edu/pub/preprint

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