NOAO > Observing Info > Approved Programs > 2009B-0209
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NOAO > Observing Info > Approved Programs > 2009B-0209 |
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PI: Inseok Song, University of Georgia, song@uga.edu
Address: Department of Physics and Astronomy, Athens, GA, 30602, USA
CoI: Christian Marois, Herzberg Institute of Astrophysics
CoI: Jennier Patience, University of Exeter
CoI: Ben Zuckerman, University of Exeter
CoI: Bruce Macintosh, Lawrence Livermore National Laboratory
CoI: Travis Barman, Lowell Observatory
CoI: David Lafrenier, University of Toronto
CoI: Rene Doyon, University of Montreal
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. There are many similarities between HR8799 and our Solar System.
IRAS and ISO detected a Kuiper belt around this star based on far infrared
dust excess and Spitzer IRS spectroscopy revealed a separate population of
warmer dust grains that are different from colder dust grains farther
outside. These warm grains must have been created in-situ from a local
asteroidal belt because a simple calculation of dust grain dynamics predicts
an extremely small chance for dust grains migrating inward from the outer
colder disk through the orbits of three massive gas giant planets. 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 Gemini Michelle.
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 > 2009B-0209 |
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