Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published January 18, 2008 | Supplemental Material
Journal Article Open

Million-Degree Plasma Pervading the Extended Orion Nebula

Abstract

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.

Additional Information

© 2008 American Association for the Advancement of Science. Received 30 August 2007; accepted 15 November 2007. Published online 29 November 2007. We thank D. Malin for providing the optical image of the Orion Nebula taken with the UK Schmidt telescope and granting permission to use it and R. Subrahmanyan and the American Astronomical Society for granting permission to reproduce the radio panel in Fig. 4D. This research is based on observations obtained with XMM-Newton, a European Space Agency (ESA) science mission with instruments and contributions directly funded by ESA member states and the United States (NASA). M.A. acknowledges support from a Swiss National Science Foundation Professorship (PP002-110504), and S.S. from NASA grant NNG05GE69G.

Attached Files

Supplemental Material - Guedel.SOM.pdf

Files

Guedel.SOM.pdf
Files (4.6 MB)
Name Size Download all
md5:9f7e48a670183605456a064d75df1f8c
4.6 MB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023