5 papers
Early-type contact systems in the LMC MACHO database
Slavek M. Rucinski
Two sub-samples of blue, luminous contact systems from among 86 systems discovered in LMC by the MACHO project and classified as EB3 have been analyzed: a sub-sample of 29 extremel…
Variable stars in the field of the open cluster NGC 7789
B. J. Mochejska, J. Kaluzny
We present the results of our search for variable stars in the intermediate-age open cluster NGC 7789. We have found 45 variable stars: 35 eclipsing binaries, five pulsating variab…
Determination of broadening functions using the Singular Value Decomposition (SVD) technique
Slavek Rucinski
Cross-correlation function (CCF) has become the standard tool for extraction of radial-velocity and broadening information from high resolution spectra. It permits integration of i…
Contact Stars in Microlensing Surveys
Slavek Rucinski
A brief summary of properties of the contact binaries is presented, with the goal to stress the unsolved problems of their formation and evolution as well as their potential contri…
Contact Binary Stars as Standard Candles
Slavek M. Rucinski
The orbital period is a measure of the size of a contact binary star, and can be combined with color to predict its luminosity to a fraction of stellar magnitude. This novel applic…