The effects of photospheric extension upon the spectra of M-type Mira variables

Details The effects of photospheric extension upon the spectra of M-type Mira variables The effects of photospheric extension upon the spectra of M-type Mira variables

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...213..209b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 213, no. 1-2, April 1989, p. 209-225. Research supported by DFG, Australian Na

Astronomy and Astrophysics

Astrophysics

110

Carbon Monoxide, Infrared Spectra, Mira Variables, Photosphere, Stellar Atmospheres, Stellar Models, Black Body Radiation, Stellar Color, Water Vapor

Scientific paper

Model photospheres were constructed from Mira variables using parameters derived from pulsational modeling and measured CO velocity profiles. The models were found to match most of the observed properties of the shorter period (300-400 day) Mira variables reasonably well. They predict the wavelength and phase dependence of the diameter, and produce IR spectra which are very similar to the observed spectra. However, the TiO and VO bands of these models are stronger than the observed bands, and the density in the model photospheres needs to be reduced to obtain better agreement.

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