NOAO >   Observing Info >   Approved Programs >   2010A-0406

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Proposal Information for 2010A-0406


PI: Sam Ragland, W.M. Keck Observatory, sragland@keck.hawaii.edu
Address: 65-1120 Mamalahoa Highway, Kamuela, HI 96743, USA

CoI: William C. Danchi, NASA Goddard Space Flight Center
CoI: Lynne Hillenbrand, California Institute of Technolory
CoI: Stephen T. Ridgway, Kitt Peak National Observatory
CoI: Wesley A. Traub, Jet Propulsion Laboratory

Title: Multi-color interferometric investigations of YSO disks

Abstract: We propose to study inner circumstellar disks of YSOs with the CHARA array using H- and K-band science instruments. The primary objective is to resolve and characterize the inner dust and gas disks in order to test disk models of Pre-Main Sequence (PMS) stars, and establish density and temperature profiles in the inner disks. The proposed CHARA observations would provide complementary measurements to our ongoing YSO study with the Keck Interferometer using the N-band Nuller, L-band and K- band science instruments. These studies have broad implications in understanding physical processes such as dust condensation, accretion and mass loss. The CHARA array is uniquely capable of making the proposed measurements, owing to larger and multiple baseline choices.


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 >   2010A-0406

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