Imaging the outflow of 1.6 MK gas from the Orion Nebula

Details Imaging the outflow of 1.6 MK gas from the Orion Nebula Imaging the outflow of 1.6 MK gas from the Orion Nebula

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007xmm..prop...91b&link_type=abstract

XMM-Newton Proposal ID #05528301

Physics

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Orion Nebula Sw, Xmm-Newton Proposal Id #05528301

Scientific paper

The Orion Nebula is the nearest and prototypical high-mass star-forming region. XMM-Newton images of the Nebula show diffuse soft X-ray emission, revealing a bubble filled with 1.6 MK gas, shocked gas from the wind of Theta1 Ori C, the O7 V star whose radiation ionizes the Nebula. The short timescale on which this wind is able to replenish the small mass of X-ray-emitting gas indicates that the gas is escaping and enriching the surrounding medium. The Nebula appears to be connected to the nearby Eridanus Superbubble by a stream of 1.8 MeV emission, due to the radioactive decay of 26Al, a possible nucleosynthetic product of Theta1 Ori C carried in its wind. We aim to directly image and spectrally study the outflow of X-ray-emitting gas from the Orion Nebula.

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