Magnetic Activity in Orion's Massive Young Stars

Details Magnetic Activity in Orion's Massive Young Stars Magnetic Activity in Orion's Massive Young Stars

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21114506h&link_type=abstract

American Astronomical Society, AAS Meeting #211, #145.06; Bulletin of the American Astronomical Society, Vol. 39, p.998

Astronomy and Astrophysics

Astrophysics

Scientific paper

In the heart if the Orion Nebula Cluster, one of the youngest and nearest star forming regions, is an ensemble of the youngest massive stars we know in the Galaxy. Having a dynamic age of about 300,000 years, it harbors a number of very young and hot ZAMS stars. Recent X-ray studies implied that some of these stars showed coronal type X-ray spectra, but some seemingly not. So far the most compelling cases for magnetic activity in these cases have been made for Theta-1 Ori C and Theta-2 Ori A. As part of our HETG Orion Legacy Project we are in the process of obtaining high quality and highly resolved X-ray spectra from all massive Trapezium stars. We will present spectra and analysis of some of these stars, including line-based spectral
characterization of spectra and dynamics. This work was supported by NASA through the Smithsonian Astrophysical Observatory (SAO) contract SV3-73016 for the Chandra X-Ray Center and Science Instruments.

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