Simple model atmospheres incorporating new opacities of VO and TiO
Open Access
- 1 November 1989
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 241 (2) , 247-257
- https://doi.org/10.1093/mnras/241.2.247
Abstract
The effect of the VO A–X, VO B–X and TiO ε molecular band opacities upon the atmospheres of red giants is investigated by construction of plane-parallel straight mean opacity models. From these simple preliminary models we find a limited heating of the upper atmosphere producing a temperature rise of up to 100 K. This result and its effect upon computed bandstrengths suggests that these opacities should be included in more accurate model atmospheres of late M stars.Keywords
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