Star Formation and Mysterious Hard X-Ray Emission in the Very Young HII Region, Trifid Nebula

Details Star Formation and Mysterious Hard X-Ray Emission in the Very Young HII Region, Trifid Nebula Star Formation and Mysterious Hard X-Ray Emission in the Very Young HII Region, Trifid Nebula

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..769r&link_type=abstract

Chandra Proposal ID #03200672

Computer Science

Chandra Proposal Id #03200672

Scientific paper

The Trifid Nebula (M~20) is one of the best-known HII regions, ionized by a single O7.5 star, HD 164492. The Trifid was rediscovered as a dynamic, "pre-Orion" star forming region containing young stars undergoing violent mass ejections. The ROSAT image revealed strong emission from HD 164492 and a dozen X-ray sources. ASCA spectra of the O star show an unexpectedly hot (3 keV) component in addition to a cooler component from the O star atmosphere. We propose an ACIS-S observation of the Trifid Nebula for 60 ks. The sub arcsec image will resolve the O star from its immediate environment, and likely detect hundreds of low mass objects. We will examine the high-energy interaction between the wind from the O star and the dense ISM.

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