IRS Diagnostic Spectroscopy of Debris Disks

Details IRS Diagnostic Spectroscopy of Debris Disks IRS Diagnostic Spectroscopy of Debris Disks

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20132w&link_type=abstract

Spitzer Proposal ID #20132

Other

Scientific paper

We propose IRS low resolution spectroscopy of 89 late B and A stars with 24um excesses indicative of circumstellar planetary debris disks. These stars have 24um fluxes ranging from 1.2 to >4x the photosphere and estimated ages between <5 and ~600Myr. The excess as a function of age shows an overall decline but a range of excesses at each age. The availability of this sample affords us a unique opportunity to understand the temporal evolution of debris disks. In addition, we will study the structure and composition of the debris disks and search for evidence of associated planets. With this large sample of known disks we can also study correlationsof the disk properties with other properties of the stars, such as binarity and rotational velocity. Our team includes observers intimately familiar with MIPS and IRS data on debris disks as well as modelers and theorists who will support the interpretation of the observations.

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