Polarimetry of R Coronae Borealis at visual light minimum.
Abstract
Changes in the wavelength dependence of the polarization for R CrB during the visual light minimum of 1972 March-June are interpreted as due to scattering from graphite particles of different sizes ranging from 0.05 it to 0.10 it mean particle radius. At different times clouds with particles of different mean particle sizes dominate the observed polarization. This agrees with the "discrete cloud model" adduced to explain the infrared observations. Subject headings: circumstellar shells - polarization R Coronae Borealis stars - stars, individual
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1973
- DOI:
- 10.1086/152559
- Bibcode:
- 1973ApJ...186..961C