A submillimeter view of protoplanetary dust disks View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2008-01-01

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

Book

TITLE

Science with the Atacama Large Millimeter Array

ISBN

978-1-4020-6934-5
978-1-4020-6935-2

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-1-4020-6935-2_23

DOI

http://dx.doi.org/10.1007/978-1-4020-6935-2_23

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1023670676


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