Wolf-Rayet 1: A Study of X-ray Production from a Structured and Massive Wind

Details Wolf-Rayet 1: A Study of X-ray Production from a Structured and Massive Wind Wolf-Rayet 1: A Study of X-ray Production from a Structured and Massive Wind

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007xmm..prop...75i&link_type=abstract

XMM-Newton Proposal ID #05522201

Physics

Stars, White Dwarfs, Solar System, Wr 1, Xmm-Newton Proposal Id #05522201

Scientific paper

Our target is the nitrogen-rich Wolf-Rayet (WR) star (= HD4004) that has recently been shown to display line-profile variability with a period of 7.7 days, similar in nature to the 3.8 day period variability long known for WR6 (= EZ CMa = HD50896). For neither star is binarity thought to be the culprit of the periodic variability; instead, large scale wind asymmetry is invoked. We are requesting three 20 ksec EPIC pointings of WR1, roughly equally spaced in phase. We seek to detect X-ray variability as a means of characterizing the nature of the globally coherent wind structure.

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