Spherically Symmetric Model Atmospheres for Low‐Mass Pre–Main‐Sequence Stars with Effective Temperatures between 2000 and 6800 K
- 10 August 2000
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 539 (1) , 366-371
- https://doi.org/10.1086/309218
Abstract
We present a grid of spherically symmetric model atmospheres for young pre-MS stars. This grid spans the parameter range 2000 K ≤ Teff ≤ 6800 K and 2.0 ≤ log g ≤ 3.5 for M = 0.1 M☉, appropriate for low-mass stars and brown dwarfs. A major improvement is the replacement of TiO and H2O line lists with the newer line list, calculated by the NASA-Ames group, for TiO (about 175 million lines of five isotopes) and for H2O (about 350 million lines in two isotopes). We provide the model structures, spectra, and broadband colors in standard filters in electronic form.Keywords
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