NOAO >   Observing Info >   Approved Programs >   2009B-0276

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Proposal Information for 2009B-0276


PI: Matthew Richter, UC Davis, richter@physics.ucdavis.edu
Address: One Shields Ave., Davis, CA 95616, USA

CoI: Andrew Kruger, UC Davis

Title: Dust Emission in Edge-on Protoplanetary Disks

Abstract: Edge-on protoplanetary disks represent the best opportunity to study the chemical evolution in the inner disk regions around young stars. In this specialized geometry, the line of sight can pass through large columns of gas close to the star making molecular absorption spectroscopy possible (Lahuis et al. 2006). While a powerful diagnostic tool, proper interpretation depends on the background continuum. High spatial resolution imaging is the best way of characterizing the dust component of disks. The images constrain global properties such as disk inclination, size, and inner radius as well as grain settling, growth, and temperature through modeling of the spectral energy distribution, particularly when the images can spatially resolve the emission. We propose to image two northern edge-on disk sources with Michelle in multiple mid-IR bands. With these two sources, and with a T-ReCs night in June, we will complete the high spatial resolution imaging of our seven Spitzer Cycle 5 IRS program stars.


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