Model of OH maser in the circumstellar envelop of Mira stars

Details Model of OH maser in the circumstellar envelop of Mira stars Model of OH maser in the circumstellar envelop of Mira stars

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cha%26a..23..179s&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 23, Issue 2, p. 179-188.

Astronomy and Astrophysics

Astrophysics

Scientific paper

In this paper, we calculate the mass and velocity distribution of the envelope of Mira stars, for an axisymmetric distribution of the envelope mass. We also calculate the inversion regions of the four 18 cm lines of OH. We assume that the radiation pressure comes from the central star and the thermal emission of the dust itself. We consider pumping mechanisms due to emission from the central star, collision, emission from the dust itself and cosmic microwave background. The model reproduces some of the general features seen in the real sources.

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