Submillimeter Observations of an Asymmetric Dust Disk around Fomalhaut

  title={Submillimeter Observations of an Asymmetric Dust Disk around Fomalhaut},
  author={Wayne S. Holland and J. S. Greaves and William R. F. Dent and Mark C. Wyatt and B. Zuckerman and Richard Albert Webb and Chris McCarthy and Iain M. Coulson and E. Ian Robson and Walter Gear},
  journal={The Astrophysical Journal},
New submillimeter images of the cold dust emission around the nearby main-sequence star Fomalhaut are presented. Observations at a wavelength of 450 lm, where the telescope beam size is equivalent to a resolution of 50 AU, reveal that Fomalhaut is encircled by a significantly nonaxisymmetric inclined ring. Smooth axisymmetric models of the ring images suggest the existence of a least one ‘‘ clump ’’ with an estimated flux of about 5% of the total from the disk, thus implying a clump mass of 0… 

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