The mean characteristics of the radiation field in an M-giant atmosphere

Details The mean characteristics of the radiation field in an M-giant atmosphere The mean characteristics of the radiation field in an M-giant atmosphere

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988kfnt....4...74p&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 4, July-Aug. 1988, p. 74-79. In Russian.

Astronomy and Astrophysics

Astronomy

M Stars, Radiative Transfer, Red Giant Stars, Ultraviolet Astronomy, Atmospheric Ionization, Atmospheric Models, Chromosphere, Photosphere

Scientific paper

The radiative transfer in an M-giant atmosphere (T eff = 3800 K, lg g = 1.5) is studied for a small UV region of the spectrum (wavelengths in the range of 225.86-225.96 nm). Two models of the red giant atmosphere are used. In the first one, the temperature decreases monotonically toward the outer layers; the second model includes the chromosphere. The mean characteristics of the field are calculated using the absorption averaging method. It is shown that the radiation field formed in the M-giant chromosphere does not penetrate into the photosphere.

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