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M. H. Vils (University of Wisconsin), R. Ignace (East Tennessee State University)
In microlensing of stars in the Bulge or the LMC, finite source events are especially interesting because of the additional information that can be derived about the lens as well as the source itself. Although binary lens events offer dramatic testimony to this fact, microlensing events by single objects are much more common, for which finite source events are (a) more rare and (b) more difficult to detect observationally. Given the minimum amplification of 1.34 required by surveys to identify candidate microlensing events, we consider to what extent one can be sure that finite source effects are relevant as a function of stellar size even when there is no transit of the stellar disk by the lens.
This research was supported by a NSF grant (AST-0354261).
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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.