Fundamental Parameters of four Massive Eclipsing Binaries in Westerlund 1

Details Fundamental Parameters of four Massive Eclipsing Binaries in Westerlund 1 Fundamental Parameters of four Massive Eclipsing Binaries in Westerlund 1

2011-08-22

arxiv.org/abs/1108.4453v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

2 pages, to appear in the proceedings of the IAUS 282 on "From Interacting Binaries to Exoplanets:Essential Modelling Tools" (

Scientific paper

We present fundamental parameters of 4 massive eclipsing binaries in the young massive cluster Westerlund 1. The goal is to measure accurate masses and radii of their component stars, which provide much needed constraints for evolutionary models of massive stars. Accurate parameters can further be used to determine a dynamical lower limit for the magnetar progenitor and to obtain an independent distance to the cluster. Our results confirm and extend the evidence for a high mass for the progenitor of the magnetar.

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