2007/11/30 by M. Güdel, M. Guedel, K. R. Briggs +6 · 4 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Star Formation Studies #Galaxy #Interstellar medium #Meteorology #Molecular cloud #Nebula #Orion Nebula #Outflow #Physics #Plasma #Star formation #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1126/science.1149926
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
openalex publication_date 2007/11/30 · arxiv created 2007/12/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Most stars form as members of large associations within dense, very cold (10 to 100 kelvin) 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 to 2.1 million kelvin pervades the southwest extension of the nebula. The plasma flows into the adjacent interstellar medium. This x-ray outflow phenomenon must be widespread throughout our Galaxy.