XMM-Newton Proposal 02033201

Details XMM-Newton Proposal 02033201 XMM-Newton Proposal 02033201

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..176g&link_type=abstract

XMM-Newton Proposal ID #02033201

Computer Science

Wr 24, Xmm-Newton Proposal 02033201

Scientific paper

We propose to observe WR24 with XMM-Newton. This star is reputed to be a single Wolf-Rayet (WR) star (spectral type WN6ha). It is the only WR star that exhibits Discrete Absorption Components in its UV spectrum, a feature quite common in O supergiants and thought to be related to wind instabilities. It also belongs to the most luminous class among the WR stars, a class that is supposed to represent the first evolutionary step off the broad main sequence for the most massive O stars. It is therefore the best candidate to isolate the contribution of the line- driven wind instabilities to the X-ray emission of WR stars.

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