The First X-Ray Spectroscopy Observation of WO Binary

Details The First X-Ray Spectroscopy Observation of WO Binary The First X-Ray Spectroscopy Observation of WO Binary

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop..174m&link_type=abstract

XMM-Newton Proposal ID #06063301

Computer Science

Stars, White Dwarfs, Solar System, Wr30A

Scientific paper

We propose a 50 ksec XMM-Newton observation of a massive stellar binary WR30a. The binary consists of a WO-type Wolf-Rayet star and an O type companion. A WO-type star is generally thought to be the final evolutionary stage in the WR phase, and has the fastest stellar wind with average terminal velocity approx 5000 km s-1. To date, there is no report on X-ray detection from WO-type stars, while intensive studies have been made for WN- and WC- type stars with X-rays. Our aim is to detect X-rays from a WO-type binary for the first time, and to compare the X-ray properties (especially the plasma temperature) with those of well-researched two types (WN and WC).

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