Orbits of Four Very Massive Binaries in the R136 Cluster | Zendy

Philip Massey | Zendy; Laura R. Penny | Zendy; Julia Vukovich | Zendy

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Orbits of Four Very Massive Binaries in the R136 Cluster

Author(s) -

Philip Massey,

Laura R. Penny,

Julia Vukovich

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/324783

Subject(s) - physics , astrophysics , photometry (optics) , cluster (spacecraft) , radial velocity , open cluster , binary number , astronomy , stars , mathematics , computer science , programming language , arithmetic

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

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