Millimeter Imaging of the beta Pictoris Debris Disk: Evidence for a Planetesimal Belt

Details Millimeter Imaging of the beta Pictoris Debris Disk: Evidence for a Planetesimal Belt Millimeter Imaging of the beta Pictoris Debris Disk: Evidence for a Planetesimal Belt

2010-12-10

arxiv.org/abs/1012.2313v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

9 pages, 2 figures, accepted by ApJL

Scientific paper

We present observations at 1.3 millimeters wavelength of the beta Pictoris debris disk with beam size 4.3 x 2.6 arcsec (83 x 50 AU) from the Submillimeter Array. The emission shows two peaks separated by ~7 arsec along the disk plane, which we interpret as a highly inclined dust ring or belt. A simple model constrains the belt center to 94+/-8 AU, close to the prominent break in slope of the optical scattered light. We identify this region as the location as the main reservoir of dust producing planetesimals in the disk.

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