Abstract
This TEST paper presents 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 by Irwin et al. (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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CITATION STYLE
APA
Corrigan, R. T., Irwin, M. J., Arnaud, J., Fahlman, G. G., Fletcher, J. M., Hewett, P. C., … Yee, H. K. C. (1991). Initial light curve of Q2237 + 0305. The Astronomical Journal, 102, 34. https://doi.org/10.1086/115856
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