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Million-Degree Plasma Pervading the Extended Orion Nebula
- Source :
- Science, Science, American Association for the Advancement of Science, 2008, 319, pp.309. ⟨10.1126/science.1149926⟩
- Publication Year :
- 2008
- Publisher :
- HAL CCSD, 2008.
-
Abstract
- Most 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.<br />Comment: accepted 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
- Subjects :
- Physics
Nebula
Multidisciplinary
Molecular cloud
Astrophysics::High Energy Astrophysical Phenomena
Astrophysics (astro-ph)
FOS: Physical sciences
Astronomy
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Galaxy
Interstellar medium
Stars
Emission nebula
0103 physical sciences
Orion Nebula
Astrophysics::Solar and Stellar Astrophysics
Outflow
Astrophysics::Earth and Planetary Astrophysics
010306 general physics
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00368075 and 10959203
- Database :
- OpenAIRE
- Journal :
- Science, Science, American Association for the Advancement of Science, 2008, 319, pp.309. ⟨10.1126/science.1149926⟩
- Accession number :
- edsair.doi.dedup.....5127b61d4a456191d052ee421069cea1