Orbits of Four Very Massive Binaries in the R136 Cluster

Details Orbits of Four Very Massive Binaries in the R136 Cluster Orbits of Four Very Massive Binaries in the R136 Cluster

2001-10-03

arxiv.org/abs/astro-ph/0110088v1

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1086/324783

We present radial velocity and photometry for four early-type, massive double-lined spectroscopic binaries in the R136 cluster. Three of these systems are eclipsing, allowing orbital inclinations to be determined. One of these systems, R136-38 (O3 V + O6 V), has one of the highest masses ever measured, 57 Mo, for the primary. Comparison of our masses with those derived from standard evolutionary tracks shows excellent agreement. We also identify five other light variables in the R136 cluster which are worthy of follow-up study.

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