Circumstellar dust and related phenomena at phase 0.8 in Miras

Details Circumstellar dust and related phenomena at phase 0.8 in Miras Circumstellar dust and related phenomena at phase 0.8 in Miras

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..77..511s&link_type=abstract

Astrophysics and Space Science, vol. 77, no. 2, July 1981, p. 511-520.

Astronomy and Astrophysics

Astrophysics

10

Cosmic Dust, M Stars, Stellar Envelopes, Stellar Models, Stellar Structure, Variable Stars, Atmospheric Models, Flare Stars, Linear Polarization, Magnetohydrodynamics, Metal Ions, Mira Variables, Silicates, T Tauri Stars

Scientific paper

The paper investigates a sudden polarization rise near phase 0.8 in M-type Mira variables (o Cet, RT Cyg). It is shown that the silicate grains exposed to short wavelength (i.e. X or UV) radiation can be the main cause of the observed polarization rise. It is suggested that the source of this radiation is both in the shock wave and flares generated by the stellar convective zone, and that all other features observed at the same time are closely connected with these events.

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