Fundamental Parameters of four Massive Eclipsing Binaries in Westerlund
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Abstract

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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Publication date Created: 22 August 2011

Article

DOI: 10.1051/0004-6361/201219465

ArXiV ID: 1108.4453

SO-VID: cf02416b-c65d-4c1f-9166-8b553faade2d

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http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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Comments 2 pages, to appear in the proceedings of the IAUS 282 on "From Interacting Binaries to Exoplanets:Essential Modelling Tools" (Tatranska Lomnica, July 18-22, 2011), Cambridge University Press

Categories astro-ph.SR

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