Detached binaries in the Large Magellanic Cloud
A selection of binaries suitable for distance determination
Instytut Astronomiczny Uniwersytetu Wrocławskiego, Kopernika 11, 51-622 Wrocław, Poland e-mail: [michalska;pigulski]@astro.uni.wroc.pl
Accepted: 3 December 2004
As a result of a careful selection of eclipsing binaries in the Large Magellanic Cloud using the OGLE-II photometric database, we present a list of 98 systems that are suitable targets for spectroscopic observations that would lead to the accurate determination of the distance to the LMC. For these systems we derive preliminary parameters combining the OGLE-II data with the photometry of MACHO and EROS surveys. In the selected sample, 58 stars have eccentric orbits. Among these stars we found fourteen systems showing apsidal motion. The data do not cover the whole apsidal motion cycle, but follow-up observations will allow detailed studies of these interesting objects.
Key words: stars: binaries: eclipsing / Magellanic Clouds / stars: fundamental parameters
© ESO, 2005