Three-color photoelectric photometry of PLEIONE during shell ejection in 1971-1986

Details Three-color photoelectric photometry of PLEIONE during shell ejection in 1971-1986 Three-color photoelectric photometry of PLEIONE during shell ejection in 1971-1986

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65..593s&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, May-June 1988, p. 593-600. In Russian.

Astronomy and Astrophysics

Astronomy

8

Astronomical Photometry, Balmer Series, Stellar Mass Ejection, Ubv Spectra, Variable Stars, Astronomical Spectroscopy, Electrophotometers, Line Spectra, Stellar Color, Stellar Rotation

Scientific paper

The results of UBV photoelectric observations of Pleione (BU Tau) during the shell episode in 1971 - 1986 are presented. The beginning of shell episode was found photometrically in autumn 1971, before its spectroscopic discovery. Total amplitude of brightness variation reached ΔU = 0m.60, ΔB = 0m.43 and ΔV = 0m.35. Variations of B-V were small. The U-B colour varied from -0m.36 to +0m.02 in the maximum and minimum of brightness. Displacement of the star on the two-colour plot (U-B) - (B-V) may be connected mainly with the increase of absorption in the Balmer continuum during the shell episode.

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