R Coronae Borealis dust ejections - A preferred plane?

Details R Coronae Borealis dust ejections - A preferred plane? R Coronae Borealis dust ejections - A preferred plane?

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325l...9s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 325, Feb. 1, 1988, p. L9-L12.

Astronomy and Astrophysics

Astrophysics

31

Stellar Envelopes, Stellar Mass Ejection, Variable Stars, Iue, Polarimetry, Stellar Magnetic Fields, Stellar Oscillations, Stellar Rotation

Scientific paper

Spectropolarimetric observations of R Coronae Borealis obtained during the brightness minimum of 1986 are presented. When combined with previous polarization observations of brightness minima, the distribution of observations in the Q-U plane suggests that ejections of dust clouds occur in a preferred plane about the star, in contrast to the standard model for the R CrB-type stars, which holds that clouds are ejected from all parts of the stellar surface. The possibility of an ejection mechanism connected with nonradial pulsations is discussed as the most likely explanation of the preferred plane.

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