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Dive into the research topics where Zbigniew Kolaczkowski is active.

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Featured researches published by Zbigniew Kolaczkowski.


International Astronomical Union Colloquium | 2002

Application of the Image Subtraction Method to the OGLE-I Observations

Grzegorz Kopacki; Zbigniew Kolaczkowski; Andrzej Pigulski

The analysis of the OGLE-I data using the standard profile-fitting software yielded a large set of new variable stars. However, due to the severe crowding of the images many variables may have been missed. Therefore, we decided to reanalyze these data by means of the image subtraction method. Our main goal was the detection of new variables. In addition, we intend to extend the time-base of the observations for the variables found in the course of the OGLE-II project (Udalski et al. 1997). We present the preliminary results of our study.


International Astronomical Union Colloquium | 2002

Preliminary Results of a Search for Variable Stars in the Globular Cluster M 13

Grzegorz Kopacki; Zbigniew Kolaczkowski; Andrzej Pigulski

Results of a search for variable stars in the globular cluster M 13 are presented. Comments on the variability of all observed variable or suspected variable stars are given. Five new RR Lyrae stars and one SX Phoenicis star are identified.


Archive | 2003

Variable Stars in NGC 2169 from CCD Photometry

Grzegorz Kopacki; Mikolaj Jerzykiewicz; Joanna Molenda-Zakowicz; Zbigniew Kolaczkowski


Archive | 2003

VI photometry of MM1 and MM7 OGLE fields (Pigulski+, 2003)

Andrzej Pigulski; Zbigniew Kolaczkowski; Grzegorz Kopacki


Archive | 2003

Discovery of Cephei Stars in the Magellanic Clouds

Andrzej Pigulski; Zbigniew Kolaczkowski


Archive | 2001

BV(RI)CHalpha photometry of NGC 663 (Pigulski

Andrzej Pigulski; Grzegorz Kopacki; Zbigniew Kolaczkowski


Archive | 2001

VI light-curves of the variable stars in M13 (Kopacki+, 2003)

Grzegorz Kopacki; Zbigniew Kolaczkowski; Andrzej Pigulski


Archive | 2000

Two pre-main sequence 5 Scuti stars in NGC 6823

Andrzej Pigulski; Zbigniew Kolaczkowski; Grzegorz Kopacki


Acta Astronomica | 2000

Erratum: A CCD Search for Variable Stars of Spectral Type B in the Northern Hemisphere Open Clusters

Andrzej Pigulski; Zbigniew Kolaczkowski; Grzegorz Kopacki


Archive | 1999

UBVI magnitudes of NGC 869 B-type pulsators (Krzesinski+, 1999)

Jurek Krzesinski; Andrzej Pigulski; Zbigniew Kolaczkowski

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