Computer Science
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...84o&link_type=abstract
XMM-Newton Proposal ID #06522504
Computer Science
Stars, White Dwarfs, Solar System, Ez Cma, Ez Cma, Ez Cma, Ez Cma
Scientific paper
We propose to obtain the first high-resolution spectrum of a single Wolf-Rayet (WR) type star. WR stars are immediate progenitors of core-collapse SNe and GRBs. The low-resolution spectra accumulated by XMM-Newton and Chandra revealed that the X-ray emission of WR stars depends on yet unknown factors - wind anisotropy, magnetic field and rotation are possible suspects. The RGS spectrum of the X-ray brightest single WR star, WR 6, analyzed by means of comprehensive models, will unveil how X-rays are produced in WR stars. The wind shock origin of X-rays will be firmly proved or disproved. The unique capabilities of XMM-Newton will elevate our knowledge about massive stars in their latest evolutionary stages to a qualitatively new level.
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