The morphology of dust shells around extreme carbon stars

Details The morphology of dust shells around extreme carbon stars The morphology of dust shells around extreme carbon stars

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...259..693c&link_type=abstract

Astrophysical Journal, Part 1, vol. 259, Aug. 15, 1982, p. 693-701.

Astronomy and Astrophysics

Astronomy

56

Carbon Stars, Cosmic Dust, Optical Polarization, Stellar Envelopes, Black Body Radiation, Infrared Astronomy, Polarimetry, Polarization Characteristics, Stellar Spectrophotometry, Variable Stars

Scientific paper

Optical spectropolarimetry of three dust-enshrouded carbon stars reveals very large degrees of polarization, requiring highly organized circumstellar dust shells around each object. The extremely peculiar spectral behavior of polarization for GL 1403 implies two orthogonally polarized spectral components: one due to hot dust; the other, the stellar photosphere. The observations of this object are interpreted in terms of a cool dust torus and bipolar scattering lobes. Such a structure, together with a 635 day photometric period derived from IR observations, supports evolution of high-mass carbon variables into bipolar nebulae.

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