Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.8704a&link_type=abstract
American Astronomical Society Meeting 210, #87.04; Bulletin of the American Astronomical Society, Vol. 39, p.197
Astronomy and Astrophysics
Astronomy
Scientific paper
The Orion Nebula Cluster is an active site of star formation which provides observers with a glimpse into the earliest stages of stellar evolution. The cluster is home to thousands of objects a few million years of age or younger; for a subset of these young stars, energetic X-ray activity has been observed using the Chandra X-ray Observatory. Using a uniform cooling loop model effective in modeling solar magnetic field loops, Favata et al. (2005) derive loop arc lengths on the order of tens of stellar radii or larger in some cases. In this work, we present Monte Carlo models of the spectral energy distributions of the stars with the largest flaring loops. Our aim is to ascertain whether the circumstellar disks may be truncated where these loops connect star to disk. We discuss the implications of the flare loop lengths with respect to the truncation radii obtained from the best fit models and discuss the derived loop lengths in the context of disk locking and stellar evolution models.
Aarnio Alicia
Stassun Keivan
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