2012/05/15 by Marc Gagné, Marc Gagne, Garrett Fehon +13
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Stellar, planetary, and galactic studies #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1205.3510
6 pages. To be published in "Four Decades of Research on Massive Stars", Carmelle Robert, Nicole St-Louis and Laurent Drissen, eds., Astronomical Society of the Pacific Conference Series
openalex publication_date 2012/05/15 · arxiv created 2012/05/25 · arxiv updated 2012/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have compiled a list of 36 O+O and 89 Wolf-Rayet binary candidates in the Milky Way and Magellanic clouds detected with the Chandra, XMM-Newton and ROSAT satellites to probe the connection between their X-ray properties and their system characteristics. Of the WR binaries with published parameters, all but two have kT > 0.9 keV. The most X-ray luminous WR binaries are typically very long period systems. The WR binaries show a nearly four-order of magnitude spread in X-ray luminosity, even among among systems with very similar WR primaries. Among the O+O binaries, short-period systems generally have soft X-ray spectra and longer period systems show harder X-ray spectra, again with a large spread in LX/Lbol.