The NextGen Model Atmosphere grid for $3000\le \Teff \le 10000\K$

Details The NextGen Model Atmosphere grid for $3000\le \Teff \le 10000\K$ The NextGen Model Atmosphere grid for $3000\le \Teff \le 10000\K$

1998-07-28

arxiv.org/abs/astro-ph/9807286v1

Astrophys.J.512:377,1999

Astronomy and Astrophysics

Astrophysics

ApJ, in press. 19 pages, also available at ftp://calvin.physast.uga.edu/pub/preprints/NextGen.ps.gz

Scientific paper

10.1086/306745

We present our NextGen Model Atmosphere grid for low mass stars for effective temperatures larger than $3000\K$. These LTE models are calculated with the same basic model assumptions and input physics as the VLMS part of the NextGen grid so that the complete grid can be used, e.g., for consistent stellar evolution calculations and for internally consistent analysis of cool star spectra. This grid is also the starting point for a large grid of detailed NLTE model atmospheres for dwarfs and giants (Hauschildt et al, in preparation). The models were calculated from $3000\K$ to $10000\K$ (in steps of $200\K$) for $3.5 \le \logg \le 5.5$ (in steps of 0.5) and metallicities of $-4.0 \le \mh \le 0.0$. We discuss the results of the model calculations and compare our results to the Kurucz 1994 grid. Some comparisons to standard stars like Vega and the Sun are presented and compared with detailed NLTE calculations.

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