Discovery and photometry of the binary-lensing caustic-crossing event EROS-BLG-2000-5

Details Discovery and photometry of the binary-lensing caustic-crossing event EROS-BLG-2000-5 Discovery and photometry of the binary-lensing caustic-crossing event EROS-BLG-2000-5

2003-03-30

arxiv.org/abs/astro-ph/0303647v1

Astronomy and Astrophysics

Astrophysics

10 pages, 6 figures

Scientific paper

The EROS collaboration has developed a real time alert system, which was operational in 1999 and 2000. A very long binary-lensing caustic crossing event, EROS-BLG-2000-5, was found in the 2000 season and monitored by EROS. EROS photometric data for this event are presented. The data are well fitted by the model of An et al. 2002 based on a completely different dataset. However, parameters of the model such as the mass ratio or the binary rotation rate are not very well constrained by EROS data.

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