Grains in the Atmospheres of Red Giant Stars

descriptionPublicationkeyboard_double_arrow_right Article 20 Aug 2001 English Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 557, pages 798-801 (issn: 0004-637X, eissn: 1538-4357,

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Authors: Jason W. Ferguson; David R. Alexander; France Allard; Peter H. Hauschildt;

doi: 10.1086/321680

Grains in the Atmospheres of Red Giant Stars

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Abstract

Model atmospheres for cool giant stars are usually computed with detailed equation of state and opacity calculations that include many molecular species. We show that models of oxygen-rich stars with effective temperatures below 3000 K must also include dust grains. The effects of dust condensation in the equation of state and on the opacity must be included to obtain accurate temperature structures and spectra.

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