Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.0505d&link_type=abstract
American Astronomical Society Meeting 203, #05.05; Bulletin of the American Astronomical Society, Vol. 35, p.1210
Astronomy and Astrophysics
Astronomy
Scientific paper
X-ray images of the heavily-populated, young, star-forming region NGC 2264 were obtained with the XMM-Newton European Photon Imaging Cameras (EPIC). The region was observed in two 30' fields of view; the southern field contains the Cone Nebula, while the northern field is centered near the bright O star, SMon. In all, 320 X-ray sources were detected above a 3 σ detection level of Lx = 3*1029 ergs s-1. The large majority of the sources have optical counterparts from earlier surveys of the pre-main sequence population of the cluster. A dozen sources have no identified optical counterpart and therefore are possible candidates for very young, deeply embedded protostars. We describe our procedures for extracting source count rates and pulse-height spectra, light curves, and X-ray luminosities. More detailed analysis of these results and a comparison with ground-based optical and infrared data appears in the accompanying poster by Dahm et al. (2004). This research was supported in part by the NASA XMM Guest Observer program and by the NSF Research Experience for Undergraduate Program.
Dahm Scott E.
David Elvira
Patten Brian Michael
Simon Theodore
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