Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.7608l&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #76.08; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
Current theory suggests that the accretion disks around T-Tauri stars regulate the angular momentum of these stars by way of the magnetic field lines. These field lines extend from the star into the disk, in effect “locking” the angular velocity of the star to that of the material at the inner edge of the disk (truncation radius). This disk shows up as an IR excess in the spectral energy distribution (SED) emitted by the star and disk. According to theory, the truncation radius is a key parameter in the regulation of the angular momentum evolution of the star.
We are currently using a Monte-Carlo simulation to model the SEDs of a sample of young stars in the Taurus-Auriga and Orion regions, and comparing these SEDs of these models with flux measurements available for these stars. Specifically, we are testing whether the truncation radii of these stars are consistent with those predicted by theory. We present the results of these stars and explore the implications of the results for theory.
Jensen Erik L.
LeBlanc Thompson S.
Stassun Keivan G.
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