Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-04-20
Astronomy and Astrophysics
Astrophysics
21 pages (including figures) + 2 gif images, latex, aaspp4, submitted to Acta Astronomica
Scientific paper
We search OGLE-I photometric database for stars, which, as defined by formal criteria adopted by OGLE-I microlensing search, showed variability during only one out of 3 or 4 observing seasons. The results include 17 previously reported microlensing events, 2 newly discovered candidate events and 15 intrinsically variable stars that have a potential of contaminating samples of microlensing events. Based on photometry obtained in 1992 and 1993 OGLE #10 was tentatively included in the list of microlensing candidates, however its light curve in 1994 and 1995 shows many characteristics of the variable stars found in our search, and most likely it is not a microlensing event. For all stars which passed our tests, we provide 44 x 44 arcsec (101 x 101 pixels) centered subframes from each OGLE-I frame in I band. It is the first time when images used to derive photometry of microlensing events are available in convenient format to astronomical community.
Szymanski Michal
Wozniak Przemyslaw
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