Computer Science
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20739m&link_type=abstract
Spitzer Proposal ID #20739
Computer Science
Scientific paper
We propose to use Spitzer archival IRAC observations of a sample of 119 T Tauri stars with M2-M9 spectral types in the ~2 Myr old star forming regions of Taurus and IC 348, in order to investigate whether the timescale of disk evolution is dependent on the stellar mass. Comparing the near- and mid-infrared excesses due to dust emission from the inner few AU of the circumstellar disks around these young, low mass stars, we will search for the presence of inner disk holes, one of the key signatures of viscous disk evolution or disk evolution via photoevaporation and compare the disk diagnostics with the known accretion diagnostics. This proposed sample of T Tauri stars provides a complimentary sample in terms of spectral type to the results from our recent ground-based mid-infrared survey of disks and to the Cores to Disks WTTS program, and will investigate the fraction of systems with inner disk holes as a function of mass.
Clarke Cathy
Duchene Gaspard
McCabe Caer-Eve
White Russel
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