The MACHO Project: Independent Evidence of a Binary Lensing Event
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- Session 17 -- Macho Projects
- Display presentation, Monday, 9, 1995, 9:20am - 6:30pm
[17.05] The MACHO Project: Independent Evidence of a Binary Lensing Event
S. Mao, R. Di Stefano (CfA), C. Alcock, K. Cook, S. Rhie (LLNL), R. Allsman (ANUSF), T. Axelrod, K. Freeman, B. Peterson, P. Quinn, A. Rodgers (MSSSO), D. Bennett, S. Perlmutter (CfPA/UC Berkeley), K. Griest (CfPA/UCSD), S. Marshall, M. Pratt (CfPA/UCSB), C. Stubbs (CfPA/U Washington), W. Sutherland (Oxford)
We present two-color photometric data obtained by the MACHO
collaboration on a binary lensing event first analyzed by Udalski et al.
(1994). We show that our independent data not only support the binary
interpretation of the event, but also provide strong additional constraints
on the models. In particular, the source size is well resolved from the
second peak in the light curve. We will discuss the uniqueness of the model
fits and various physical constraints on the models.
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