Initial light curve of Q2237 + 0305
R. T. CorriganCambridge University Institute of Astronomy, EnglandM. J. IrwinCambridge University Institute of Astronomy, EnglandJ. ArnaudObservatoire Midi-Pyrenees, Toulouse, FranceGregory G. FahlmanBritish Columbia, University, Vancouver, CanadaJ. M. FletcherDominion Astrophysical Observatory, Victoria, CanadaP. C. Hewett-Jacqueline N. Hewitt-O. Le Fèvre-R. D. McClure-C. J. Pritchet-Donald P. SchneiderEdwin L. Turner-R. L. Webster-H. K. C. Yee-
1991en
ABI
Аннотация
We present CCD photometry for the gravitationally lensed quasar system 2237+0305, in optical passbands from B through R, taken over a time period of more than 3 yr. These data provide new information about the probable microlensing event reported in Irwin et al. [AJ, 98, 1989 (1989)]; the rise time of this feature is approximately 26 days. Four additional independent brightness changes in the quasar images are detected.
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