A photometric history of OI 090.4 and OJ-131

Details A photometric history of OI 090.4 and OJ-131 A photometric history of OI 090.4 and OJ-131

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..156b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Apr.-May 1980, p. 156-158.

Astronomy and Astrophysics

Astronomy

17

Astronomical Photometry, Bl Lacertae Objects, Light Curve, Astronomical Photography, Neutron Stars, Stellar Magnitude

Scientific paper

The photometric histories of the confirmed BL Lacertae objects OI 090.4 and OJ-131 are investigated by an examination of photographic plates. Observations of OJ-131, although meager, indicate that the object typically ranges in magnitude from 16.3 to 17.5. The light curve obtained for OI 090.4 reveals it to be more optically active than OJ-131, with a brightness range of about 2 magnitudes and short-time scale variations on the order of 0.8 magnitude superimposed on a constant value of 16.3. It is concluded that both objects investigated deserve further monitoring.

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