X-ray Study of Tau-Sco-like Massive Stars

Details X-ray Study of Tau-Sco-like Massive Stars X-ray Study of Tau-Sco-like Massive Stars

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop...80i&link_type=abstract

XMM-Newton Proposal ID #06719902

Computer Science

Stars, White Dwarfs, Solar System, Hd66665, Hd63425

Scientific paper

We request 50 ksec of XMM time to obtain EPIC spectra of two early B type stars, HD66665 and HD63425, which have observable properties similar to tau Sco. Specifically, they are both slowly rotating, magnetic early, main sequence B stars with peculiar UV resonance line profiles. The proposed observations will determine whether their X-ray spectra also contain an anomalously hard component like tau Sco's. If so, the new observations will provide valuable insight into the interaction of X-ray and UV spectral characteristics and will demonstrate that tau Sco is not a simple curiosity, but rather the proto-type of a class of magnetic stars which are, perhaps, part of a sequence, or a particular evolutionary phase of massive, magnetic stars.

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