Ordered linear polarization changes in Betelgeuse

Details Ordered linear polarization changes in Betelgeuse Ordered linear polarization changes in Betelgeuse

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241l.165h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 241, Nov. 1, 1980, p. L165-L168.

Astronomy and Astrophysics

Astrophysics

23

Late Stars, Linear Polarization, Polarization Characteristics, Semiregular Variable Stars, Stellar Spectrophotometry, Photosphere, Pulsars, Supergiant Stars

Scientific paper

Betelgeuse's linear polarization was intensively monitored over the 1979-1980 observing season, an interval of 7 months. Significant ordered (as opposed to stochastic) changes were detected. The polarization variations arise from changes in the lower atmosphere - either directly through changes in the photospheric scattering regime, or indirectly through changes in the illumination of circumstellar material. Mechanisms to account for these lower atmospheric variations are indicated.

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