[vsnet-alert 3355] Possible binary event OGLE-1999-BUL-40

[Michal Szymanski <msz@astrouw.edu.pl>]

POSSIBLE BINARY MICROLENSING

Observations collected by OGLE during the last few nights at the Las
Campanas Observatory indicate significant deviation of the
OGLE-1999-BUL-40 microlensing event from single-source microlensing
light curve. Deviation seems to be typical for causting crossing binary
microlensing. It is very likely that the second caustic crossing will
occur within a few next days.

Follow up observations are strongly encouraged !!!

OGLE-1999-BUL-40

Field          BUL_SC12
StarNo         179428
RA(J2000.0)    18:15:59.02
Dec(J2000.0)   -24:10:04.9
Remarks        Possible caustic crossing binary event


Finding charts, light curve plots, photometric data (updated regularly)
can be found in:
 
http://vsnet.astrouw.edu.pl/~ftp/ogle/ogle2/ews/bul-40.html
http://vsnet.astrouw.edu.pl/ogle/ogle2/ews/1999/bul-40.tar.gz

regards, OGLE team.

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