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 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..144m&link_type=abstract

XMM-Newton Proposal ID #06539701

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 supergiant. A WO-type star is generally thought to be the final evolutionary stage in the W-R phase, and has the fastest stellar wind with average terminal velocity ~5000 km/s. To date, there is no report on X-ray detection from WO-type binaries, while intensive studies have been made for those of WN- and WC- types 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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