Disk Dissipation at an Age of 1-2 Myr

Details Disk Dissipation at an Age of 1-2 Myr Disk Dissipation at an Age of 1-2 Myr

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542801f&link_type=abstract

American Astronomical Society, AAS Meeting #215, #428.01; Bulletin of the American Astronomical Society, Vol. 42, p.344

Astronomy and Astrophysics

Astronomy

Scientific paper

We present an analysis of young (1-2 Myr old) protoplanetary disks that show signs that their disk material has already started to disperse. Their low infrared excess emission suggests that the inner disk regions are depleted in small dust grains compared to typical protoplanetary accretion disks. Using mid-infrared spectra obtained with the Spitzer Space Telescope, we characterize the infrared excess and quantify the degree of dust depletion in these systems, as well as the distribution and composition of the remaining dust. This information will be used to assess which processes may play a role in clearing the inner disks.
This work is supported by NASA through the Spitzer Space Telescope Fellowship Program, through a contract issued by JPL/Caltech under a contract with NASA.

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