4 papers · 1 filter
Modelling the Galactic Bar Using Red Clump Stars
K. Z. Stanek, M. Mateo, A. Udalski +4
The color-magnitude diagrams of stars obtained for 19 fields towards the Galactic bulge with the OGLE project reveal a well-defined population of bulge red clu…
THE OPTICAL GRAVITATIONAL LENSING EXPERIMENT. THE CATALOG OF PERIODIC VARIABLE STARS IN THE GALACTIC BULGE. II. PERIODIC VARIABLES IN FOUR BAADE'S WINDOW FIELDS: BW1, BW2, BW3 AND BW4
A. UDALSKI, M. SZYMANSKI, J. KALUZNY +3
We present the second part of the OGLE Catalog of Periodic Variable Stars in the Galactic bulge. 800 variable stars found in four Baade's Window fields BW1, BW2, BW3 and BW4 are pr…
The Optical Gravitational Lensing Experiment. Variable stars in the Sculptor dwarf speroidal galaxy
J. Kaluzny, M. Kubiak, M. Szymanski +3
The central area of the Sculptor dwarf galaxy was surveyed for variable stars as a side-program of the OGLE project. Light curves in the V band were obtained for 226 RR Lyr stars a…
The Optical Depth to Gravitational Microlensing in the Direction of the Galactic Bulge
A. Udalski, M. Szymanski, K. Z. Stanek +6
We present the analysis of the first two years of the OGLE search for gravitational lenses towards the Galactic bulge. We detected 9 microlensing events in an algorithmic search of…