Gyrotropy and optical activity in stellar atmospheres and circumstellar clouds

Details Gyrotropy and optical activity in stellar atmospheres and circumstellar clouds Gyrotropy and optical activity in stellar atmospheres and circumstellar clouds

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pazh....5..526d&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 5, Oct. 1979, p. 526-530.) Soviet Astronomy Letters, vol. 5, Sept.-Oct. 1979, p. 281-28

Astronomy and Astrophysics

Astronomy

2

Gyrotropism, Interstellar Matter, Optical Activity, Optical Polarization, Stellar Atmospheres, Circular Polarization, Light Scattering, Linear Polarization, Stellar Envelopes, Stellar Magnetic Fields, Stellar Radiation

Scientific paper

Scattering of light from stars in their atmospheres and in clouds containing a magnetic field will induce linear and circular polarization of the continuum. Stars with B about 1-10 gauss should exhibit intrinsic linear polarization of about 0.1-0.2%. For stars with B less than 1 or B greater than 10 gauss the linear polarization becomes small; circular polarization will be appreciable only if B is greater than 10 to the 5th gauss. Spatial segregation of specularly asymmetric grains in a circumstellar envelope could, however, generate circular polarization in radiation traversing the envelope.

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