A grid of MARCS model atmospheres for late-type stars

Abstract

Context: In analyses of stellar spectra and colours, and for the analysis of integrated light from galaxies, a homogeneous grid of model atmospheres of late-type stars and corresponding flux spectra is needed. Aims: We construct an extensive grid of spherically-symmetric models (supplemented with plane-parallel ones for the highest surface gravities), built on up-to-date atomic and molecular data, and make it available for public use. Methods: The most recent version of the MARCS program is used. Results: We present a grid of about 104 model atmospheres for stars with 2500 K