Million-Degree Plasma Pervading the Extended Orion Nebula

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dc.creatorGuedel, M.
dc.creatorBriggs, K. R.
dc.creatorMontmerle, T.
dc.creatorAudard, M.
dc.creatorRebull, L.
dc.creatorSkinner, S. L.
dc.date2007-12-04
dc.date.accessioned2026-07-07T08:47:12Z
dc.date.available2026-07-07T08:47:12Z
dc.descriptionMost stars form as members of large associations within dense, very cold (10-100 K) molecular clouds. The nearby giant molecular cloud in Orion hosts several thousand stars of ages less than a few million years, many of which are located in or around the famous Orion Nebula, a prominent gas structure illuminated and ionized by a small group of massive stars (the Trapezium). We present X-ray observations obtained with the X-ray Multi-Mirror satellite XMM-Newton revealing that a hot plasma with a temperature of 1.7-2.1 million K pervades the southwest extension of the nebula. The plasma, originating in the strong stellar winds from the Trapezium, flows into the adjacent interstellar medium. This X-ray outflow phenomenon must be widespread throughout our Galaxy.
dc.descriptionaccepted by Science, 23 pg, 7 figs, incl. Supplementary Online Material; this version of the work has been posted by permission of the AAAS. The definitive version was published in Science Express on Nov. 29, 2007, at http://www.sciencemag.org/cgi/content/abstract/1149926; see also http://www.astro.phys.ethz.ch/papers/guedel/papers.html for downloads
dc.identifierhttps://arxiv.org/abs/0712.0476
dc.identifierhttp://arxiv.org/abs/0712.0476
dc.identifierdoi:10.1126/science.1149926
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/143513
dc.subjectAstrophysics
dc.titleMillion-Degree Plasma Pervading the Extended Orion Nebula
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