MILLIMETER IMAGING OF THE β PICTORIS DEBRIS DISK: EVIDENCE FOR A PLANETESIMAL BELT

被引:25
|
作者
Wilner, David J. [1 ]
Andrews, Sean M. [1 ]
Hughes, A. Meredith [2 ]
机构
[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[2] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
关键词
circumstellar matter; planetary systems; planet-disk interactions; stars: individual (beta Pictoris); DUST DISK; CORONAGRAPHIC OBSERVATIONS; VEGA; SYSTEM; IMAGES; ASYMMETRIES; PLANETS; MODELS; STARS; SIZE;
D O I
10.1088/2041-8205/727/2/L42
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present observations at 1.3 mm wavelength of the beta Pictoris debris disk with beam size 4."3 x 2."6 ( 83 x 50 AU) from the Submillimeter Array. The emission shows two peaks separated by similar to 7" 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 of the main reservoir of dust-producing planetesimals in the disk.
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页数:4
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