Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..349..293m&link_type=abstract
Astrophysics of Variable Stars, Pecs, Hungary, 5-10 September 2005, Sterken, C. and Aerts, C. (eds). ASP Conference Series, Vol.
Astronomy and Astrophysics
Astrophysics
Scientific paper
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 ~ 100 EA-type and ~ 60 EB-type systems that are suitable targets for spectroscopic observations that would lead to the accurate determination of the distance to the LMC. The analysis of light curves was made by means of Wilson-Devinney program. In order to find a global minimum in the parameter space, we used the Monte-Carlo method. We examined also which parameters can be reliably estimated from photometry alone. We especially discuss estimation of the photometric mass ratio. In the selected sample, ~ 60 stars have eccentric orbits. Among these stars we found twenty five 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.
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