NOAO >   Observing Info >   Approved Programs >   2012A-0477

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Proposal Information for 2012A-0477


PI: Dan Li, University of Florida, dli@astro.ufl.edu
Address: Department of Astronomy, PO Box 112055, 211 Bryant Space Science Center, Gainesville, FL, 32611-2055, USA

CoI: Charles Telesco, University of Florida

Title: Probing the protoplanetary disk of TW Hya with T-ReCS

Abstract: We propose deep Q band imaging of the protoplanetary disk of TW Hya. Being one of the nearest T Tauri stars with a relatively massive protoplanetary disk, TW Hya provides an ideal sample for the studies of disk evolution and planet formation. Previous analysis of the SED suggests that a dust-free, optically thin region exists around the center of its disk. To date, most effort has been made to probe this innermost region (r < 4 AU), attempting to determine the causes of the inner hole and their implications on the on-going planet formation. The properties of the outer disk (20 < r < 200 AU), however, lack tight observing constraints. With T-ReCS deep Q band imaging, which traces the dust continuum emission originating in the surface layer and/or the deeper regions of the disk, we expect to obtain useful clues on the large-scale properties (e.g., disk morphology, surface brightness profile, etc.) of the disk. We request a total of 3.23 hours for this program.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2012A-0477

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