A submillimeter view of protoplanetary dust disks View Full Text


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Article Info

DATE

2007-09-11

AUTHORS

Sean M. Andrews, Jonathan P. Williams

ABSTRACT

We present some results from our submillimeter single-dish and aperture synthesis imaging surveys of protoplanetary disks using the JCMT, CSO, and Submillimeter Array (SMA) on Mauna Kea, Hawaii. Employing a simple disk model, we simultaneously fit the spectral energy distributions and spatially resolved submillimeter continuum emission from our SMA survey to constrain disk structure properties, including surface density profiles and sizes. The typical disk structure we infer is consistent with a fiducial accretion disk model with a viscosity parameter α≈0.01. Combined with a large, multiwavelength single-dish survey of similar disks, we show how these observations provide evidence for significant grain growth and rapid evolution in the outer regions of disks, perhaps due to an internal photoevaporation process. In addition, we discuss SMA observations of the disks in the Orion Trapezium (proplyds) in the context of disk evolution in a more extreme environment. More... »

PAGES

119-122

References to SciGraph publications

  • 1977-09. The distribution of mass in the planetary system and solar nebula in ASTROPHYSICS AND SPACE SCIENCE
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/s10509-007-9614-5

    DOI

    http://dx.doi.org/10.1007/s10509-007-9614-5

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