Portal de Periódicos da CAPES

R Coronae Borealis dust ejections - A preferred plane?

1988; IOP Publishing; Volume: 325; Linguagem: Inglês

10.1086/185098

1538-4357

S. A. Stanford, Geoffrey C. Clayton, M. R. Meade, K. H. Nordsieck, B. A. Whitney, M. A. Murison, M. A. Nook, Christopher M. Anderson,

Astronomy and Astrophysical Research

view Abstract Citations (34) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS R Coronae Borealis Dust Ejections: A Preferred Plane? Stanford, S. A. ; Clayton, G. C. ; Meade, M. R. ; Nordsieck, K. H. ; Whitney, B. A. ; Murison, M. A. ; Nook, M. A. ; Anderson, C. M. Abstract 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. Publication: The Astrophysical Journal Pub Date: February 1988 DOI: 10.1086/185098 Bibcode: 1988ApJ...325L...9S Keywords: Stellar Envelopes; Stellar Mass Ejection; Variable Stars; Iue; Polarimetry; Stellar Magnetic Fields; Stellar Oscillations; Stellar Rotation; Astronomy; POLARIZATION; STARS: CIRCUMSTELLAR SHELLS; STARS: R CORONAE BOREALIS; STARS: VARIABLES full text sources ADS | data products SIMBAD (2)