The complex XMM-RGS spectrum of the hot star sigma Orionis

Details The complex XMM-RGS spectrum of the hot star sigma Orionis The complex XMM-RGS spectrum of the hot star sigma Orionis

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hrxs.confe..29p&link_type=abstract

High Resolution X-ray Spectroscopy with XMM-Newton and Chandra, Proceedings of the international workshop held at the Mullard Sp

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We present a preliminary analysis of an XMM-Newton observation of the sigma Orionis cluster centered on the O9.5V star sigma Ori. In addition to the EPIC image, which shows the presence of about 240 sources, mostly low-mass PMS stars belonging to the cluster, a high statistics RGS spectrum is obtained for the central source. The EPIC image shows the presence of nearby sources, including a flaring one, which, although weaker, may contaminate the RGS spectrum of the central star. We present an analysis of the RGS and EPIC spectra of sigma Ori and of the EPIC spectra of the nearby sources and we discuss the possible contamination of the hot star RGS spectrum by the other sources.

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