Evolution and Lifetimes of Protoplanetary Disks

Details Evolution and Lifetimes of Protoplanetary Disks Evolution and Lifetimes of Protoplanetary Disks

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop...58r&link_type=abstract

Spitzer Proposal ID #58

Physics

Scientific paper

The goal of our study is twofold. First, we intend to determine the frequency and duration of the protoplanetary disk phase of evolution and thus directly constrain the probabilities and timescales for the formation of the major planetary bodies. Second, we intend to investigate the timescale for and nature of the transition to the debris disk phase of disk evolution. To achieve these goals we intend to survey a sample of young stellar clusters of varying age, richness and stellar content. We will determine disk frequency by measuring the amount of infrared excess toward every resolved star in each of our clusters. The primary wavelength of the survey will be 24 microns. Since the observations will be done in MIPS scan map mode, concurrent observations at 70 and 160 mm will be made. Additionally, for many of the clusters, we will coordinate observations with the IRAC team to obtain photometry at 3.5, 4.5, 6.3, and 8 mm. Our sample consists of clusters ranging in age from 1-100 million years.

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