The Optical Gravitational Lensing Experiment (OGLE) is a long term
project with the main goal of searching for dark matter in our Galaxy by
identifying microlensing events toward the galactic bulge (Udalski et
al. 1992, 1994). At times the Bulge is unobservable we conduct
other long-term photometric programs.
A complete list of side-projects attempted by the OGLE team
can be found in Paczyński et al. (1995).
In particular, we monitored globular
clusters NGC 104 (=47 Tuc) and NGC 5139 (=
Cen) in a search for
variable stars of various types.
In Papers I & II (Kaluzny et al. 1996; Kaluzny et al.
1997) we reported on 70 variables from the field of Cen.
That sample consisted mostly of eclipsing binaries and SX Phe stars.
In this contribution we provide light curves for other 141 variables
in Cen.
The present sample consists mostly of RR Lyr stars. A few variables
located outside horizontal branch of the cluster are also included.
Omega Centauri is known to possess a very rich population of RR Lyr
stars which were first studied by Bailey (1902) and,
more extensively, in a landmark paper by Martin (1938).
Some recent contributions on RR Lyr stars in Cen
are those by Gratton et al. (1986) and Dickens
(1989). A more complete bibliography on the subject can be found
in Smith (1995).