A Resolved Ring of Debris Dust around the Solar Analog HD 107146

Creators: Corder, Stuartt; Carpenter, John M.; Sargent, Anneila I.; Zauderer, B. Ashley; Wright, Melvyn C. H.; White, Stephen M.; Woody, David P.; Teuben, Peter; Scott, Stephen L.; Pound, Marc W.; Plambeck, Richard L.; Lamb, James W.; Koda, Jin; Hodges, Mark; Hawkins, David; Bock, Douglas C.-J.

Abstract

We present resolved images of the dust continuum emission from the debris disk around the young (80-200 Myr) solar-type star HD 107146 with CARMA at λ = 1.3 mm and the CSO at λ = 350 μ. Both images show that the dust emission extends over an approximately 10" diameter region. The high-resolution (3") CARMA image further reveals that the dust is distributed in a partial ring with significant decrease in a flux inward of 97 AU. Two prominent emission peaks appear within the ring separated by ~140° in the position angle. The morphology of the dust emission is suggestive of dust captured into a mean motion resonance, which would imply the presence of a planet at an orbital radius of ~45-75 AU.

Additional Information

© 2009 The American Astronomical Society. Received 2008 July 31, accepted for publication 2008 November 12. Published 2008 December 8. Print publication: Issue 1 (2009 January 1). We thank the referee for comments which improved this work. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the Associates of the California Institute of Technology, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities.

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