X-ray properties of the young open cluster around λ Orionis

Details X-ray properties of the young open cluster around λ Orionis X-ray properties of the young open cluster around λ Orionis

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1094..592f&link_type=abstract

COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun.

Computer Science

X-Ray Emission Spectra And Fluorescence, Stellar Clusters And Associations, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification

Scientific paper

We present XMM-Newton observations of the young (~1-8 Myr) cluster around the hot (O8 III) star λ Orionis. We have obtained both EPIC imaging data of the cluster and a high-resolution RGS spectrum of the hot star. We have detected 167 X-ray sources, of which 56 are identified with cluster members, and 24 are identified with new photometric candidates. We present the results of the EPIC spatial and spectral analysis of the cluster sources, and compare them with those obtained for the ``twin'' σ Ori cluster.

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