Massive Extragalactic Eclipsing Binaries

Details Massive Extragalactic Eclipsing Binaries Massive Extragalactic Eclipsing Binaries

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...5e...2b&link_type=abstract

Calibrating the Top of the Stellar M-L Relation, 26th meeting of the IAU, Joint Discussion 5, 16 August 2006, Prague, Czech Repu

Physics

Scientific paper

Masses, radii and luminosities of distant stars can only be measured accurately in eclipsing binaries. The most massive eclipsing binary currently known is WR20a, which consists of two 80 solar mass stars in a 3.7 day orbit. Analogs of WR20a are bound to exist both in massive stellar clusters in our Galaxy and in nearby galaxies. I will present the results of a radial velocity survey of the most massive binaries in the Magellanic Clouds, selected from OGLE as the brightest eclipsing binaries in these galaxies. These measurements will provide much needed constraints on theories that model the formation and evolution of massive stars.

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