A Resolved Ring of Debris Dust Around the Solar Analog HD 107146
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 λ1.3 mm and the CSO at λ350 μm. Both images show that the dust emission extends over an 10 diameter region. The high resolution (3) CARMA image further reveals that the dust is distributed in a partial ring with significant decrease in flux inward of 97 AU. Two prominent emission peaks appear within the ring separated by 140 degrees in 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.
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