Rapid variation in the circumstellar 10 micron emission of Alpha Orionis

Details Rapid variation in the circumstellar 10 micron emission of Alpha Orionis Rapid variation in the circumstellar 10 micron emission of Alpha Orionis

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...299l..37b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 299, Dec. 1, 1985, p. L37-L40.

Astronomy and Astrophysics

Astrophysics

17

Emission Spectra, Infrared Spectra, Late Stars, Periodic Variations, Stellar Envelopes, Supergiant Stars, Continuous Spectra, Cosmic Dust, Interstellar Matter

Scientific paper

The spatial distribution of 10 μm continuum flux around the supergiant star α Orionis was measured on two occasions separated by an interval of 1 yr. A significant change in the infrared radiation pattern on the sub-arc second scale was observed. This change cannot be explained plausibly by macroscopic motion but may be due to a change in the physical properties of the circumstellar dust.

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