Detached binaries in the Large Magellanic Cloud. A selection of binaries suitable for distance determination

Details Detached binaries in the Large Magellanic Cloud. A selection of binaries suitable for distance determination Detached binaries in the Large Magellanic Cloud. A selection of binaries suitable for distance determination

2005-01-18

arxiv.org/abs/astro-ph/0501380v1

Astronomy and Astrophysics

Astrophysics

15 pages, 6 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20042343

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.

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