NOAO > Observing Info > Approved Programs > 2010B-0242
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NOAO > Observing Info > Approved Programs > 2010B-0242 |
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PI: Inseok Song, University of Georgia, song@uga.edu
Address: Department of Physics and Astronomy, Athens, GA, 30602, USA
CoI: Jennifer Patience, University of Exeter
CoI: Adam Schneider, University of Georgia
Title: Resolving the Asteroid Belt of HR 8799
Abstract:
In 2008, three orbiting planets were discovered and confirmed around HR8799
marking it as the first imaged extra solar planetary system with multiple
planets. IRAS and ISO detected a cold dusty disk, an analogy to our Kuiper
Belt, around this star based on far infrared dust excess. Spitzer IRS
spectroscopy revealed a separate population of warmer dust grains that are
different from colder dust grains. Warm dust grains must have been created
in-situ from a local asteroidal belt because a detailed calculation of dust
grain dynamics predicts an extremely small chance for dust grains migrating
inward from the outer colder disk. Therefore, HR8799 must have an asteroid
belt inside of the innermost detected planet. The expected angular extent of
the astroid belt is 0.17-0.50 arcsec radius and such a warm dust disk can be
readily imaged with the diffraction limited imaging at Gemini.
This proposal was accepted as Band2 in 2009B, however, because of the Gemini
North scheduling issue, no useful data was obtained. Therefore, we are
resubmitting the proposal for Gemini/T-ReCS.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2010B-0242 |
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