천문학회지 (Journal of The Korean Astronomical Society)
- 제29권spc1호
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- Pages.107-108
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- 1996
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
DOUBLE PEAKED OUTBURSTS OF THE BLAZAR OJ 287 IN 1994 - 1996
- ARIMOTO JUN'ICHI (Astronomical Institute, Osaka Kyoiku University) ;
- SADAKANE Kozo (Astronomical Institute, Osaka Kyoiku University) ;
- HONDA SATOSHI (Astronomical Institute, Osaka Kyoiku University) ;
- TANABE KAZUHITO (Astronomical Institute, Osaka Kyoiku University)
- 발행 : 1996.12.01
초록
VRI bands CCD photometric observations of the BL Lac object OJ 287 have been carried out during the period from October, 1994 to May, 1996. OJ 287 underwent two major outbursts during our observations. The first peak (V14.0 mag.) occurred in the first half of November, 1994 and faded out to 16.5 mag within 150 days. The second peak (14.0 mag.) was observed in late December, 1995. The latter peak continued at nearly the same brightness until May, 1996. Such a long lasting outburst has never been reported for OJ 287. Color indices (V - R and V-I) remained nearly constant during the outbursts.