Catalog of Candidate Variable Stars in the Galactic Bulge

from Difference Image Analysis

The current version of the catalog contains over 220 000 I band light curves, basically entire output of the DIA pipeline. The details can be found in the postscript paper

NEW DATA! Extended light curves covering all four OGLE2 seasons are now available for the same variables as before* detected using difference frames from 1997-1999. In particular the DIA centroid is the same as before and does not use new information from frames taken in 2000. Reference images are also the same. The fourth season makes insignificant difference for detecting continuous variability, but the present sample misses transient objects from 2000.

Data distribution:
The data can be accessed from the OGLE ftp archive
This work is still preliminary. It will be gradually cleaned of artifacts and fully calibrated after adding the data for the year of 2000. About 10% of the objects are actually spurious detections. Most fields are calibrated to about 0.05 mag by matching to the OGLE DoPhot database, however for 10 fields (BUL_SC: 7, 9, 20, 25, 28, 32, 43, 47, 48 and 49) only rough calibration was available at the time of this analysis. Zero points for those fields can be off by as much as 0.25 mag and cannot be used in distance estimates. Nevertheless, the data should find numerous applications including the work on classification of variables and cross identifications with catalogs of objects detected in other spectral bands.

PLEASE cite the following paper when using the data or referring to these OGLE results:
Wozniak et al., 2002, Acta Astron., 52, 129.
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Last modified: Wed Jun 10 17:00:20 2009