Long-term changes of the Be star OT Geminorum

Details Long-term changes of the Be star OT Geminorum Long-term changes of the Be star OT Geminorum

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...350..566b&link_type=abstract

Astronomy and Astrophysics, v.350, p.566-570 (1999)

Astronomy and Astrophysics

Astrophysics

2

Stars: Variables: General, Stars: Individual: Ot Gem, Stars: Emission-Line, Be

Scientific paper

We investigate the character of light variability of the bright Be star OT Gem . Two phases of the long-term light changes were distinguished: - a quiet phase which is characterized by mild light changes; and - an active phase in which the sudden increases of brightness up to 0. (v (r) m m) 4 in V occur. During the active phases, a cyclic oscillation of brightness of a period between 70 and 80 days is present, with the most probable value being 71. (v (r) m d) 89. A positive correlation was found between the light and colour variations and the emission strength in both phases.

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