1 citations · 1 across the 4 of their papers we have counts for
20 papers
Cluster AgeS Experiment (CASE): Dwarf Novae and a Probable Microlensing Event in the Globular Cluster M22
P. Pietrukowicz, J. Kaluzny, I. B. Thompson +4
We report the identification of a new cataclysmic variable (denoted as CV2) and a probable microlensing event in the field of the globular cluster M22. Two outbursts were observed…
Variable Stars in the Archival HST Data of Globular Clusters M13, M30 and NGC 6712
Pawel Pietrukowicz, Janusz Kaluzny
We have analyzed archival HST/WFPC2 time-series data of the central parts of globular clusters M13, M30 and NGC 6712 in search of variable objects. Among a total of 21 identified v…
Searching for Variable Stars in the Central Part of the Globular Cluster M22
Pawel Pietrukowicz, Janusz Kaluzny
Time-series data taken with the Hubble Space Telescope of three fields covering the central part of the globular cluster M22 have been analyzed in search of variable objects. We re…
Variable Yellow and Red Stragglers in the Old Open Cluster NGC 6791
Janusz Kaluzny
Two sets of archive time series observations of an old open cluster NGC 6791 were re-analysed using an image subtraction technique. We report identification of four new variables.…
Photometry and Spectroscopy of Eclipsing Binaries in omega Centauri
J. Kaluzny, I. Thompson, W. Krzeminski +3
Detached eclipsing double line spectroscopic binaries are accurate distance indicators. They can be used for the direct determination of distances to globular clusters in which suc…
RR Lyrae Variables in the Globular Cluster M5
J. Kaluzny, A. Olech, I. Thompson +3
We present V-band CCD photometry of 65 RR Lyr variables from the globular cluster M5. We have estimated the basic physical parameters for 16 RRc stars and 26 RRab stars using a Fou…