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[vsolj-alert 346] [vsnet-alert 3063] OGLE-1999-BUL-11 CAUSTIC CROSSING ALERT

[vsnet-alert 3063] OGLE-1999-BUL-11 CAUSTIC CROSSING ALERT

  OGLE alertです。レンズ天体が連星らしく、単独星のマイクロレンズ現象とは違
　って鋭いピークが現れ、現在進行中のようです。観測が望まれます。

CAUSTIC CROSSING ALERT

Observations collected by OGLE during the last night (Jun. 2, 1999)
at the Las Campanas Observatory indicate that the OGLE-1999-BUL-11
binary lens microlensing event candidate is undergoing the second
caustic crossing. The brightness of the object increases rapidly -- by
about 0.6 mag during the 7 hour observing period.

Follow up observations during the following hours are strongly
encouraged !!!

Field          BUL_SC36
StarNo         336761
RA(J2000.0)    18:05:29.59
Dec(J2000.0)   -27:59:14.4
  I_0 mag      18.541     0.011
Remarks        Binary Lens Candidate

Finding charts, light curve plots, photometric data (updated regularly)
can be found in:
 
http://vsnet.astrouw.edu.pl/~ftp/ogle/ogle2/ews/bul-11.html
http://vsnet.astrouw.edu.pl/ogle/ogle2/ews/1999/bul-11.tar.gz

See also PLANET team information on this event:

http://vsnet.astro.rug.nl/~planet

regards, OGLE team.

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