Optical variation and outburst of OJ 287

Details Optical variation and outburst of OJ 287 Optical variation and outburst of OJ 287

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cha%26a..10..201l&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 10, Issue 3, p. 201-205.

Astronomy and Astrophysics

Astrophysics

Scientific paper

We monitored by photographic photometry the BL Lac object OJ 287 continuously during the 4-year period 1980-1984 and obtained the following results: (1) We confirm a previously proposed light variation on a time scale of about 8 days with an amplitude of 0.37 mag in B. (2) During the period 1980-1982, OJ 287 was stable and faint B = 15.61 mag at its faintest; while in March 1983, we observed an outburst (B = 14.25 mag). (3) Comparison star No. 9 given in Crain's handbook is probably a variable star. (4) A light curve based on all the published photographic data over the period 1968-1984 shows evidence for variations of large amplitudes (ΔB = 1.25-4.00 mag) over time scales of 2-4 years, in addition to the short term variation mentioned above.
DENG Li-wu, ZHOU Yuan and LIU Xin-de also participated in this work.

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