Studying the Gas in Circumstellar Disks with Dust Gaps and Holes

Details Studying the Gas in Circumstellar Disks with Dust Gaps and Holes Studying the Gas in Circumstellar Disks with Dust Gaps and Holes

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21940405e&link_type=abstract

American Astronomical Society, AAS Meeting #219, #404.05

Astronomy and Astrophysics

Astronomy

Scientific paper

Forming planets should interact with the surrounding accretion disk, clearing the material around themselves and leaving behind gaps in the disk. Stars with inner holes in their disks have been detected and are labeled as transitional objects. A few years ago, Spitzer identified a new class of "pre-transitional disks" which have gaps rather than holes - they have an inner disk, a gap, and an outer disk. In order to explore the relationship between the dust and gas in the inner regions of these objects, we obtained high-resolution Spitzer IRS spectra for a number of transitional and pre-transitional objects. We will present detections of 12.81 micron Neon fine structure emission from our sample. In addition, we will discuss the mass accretion rates of (pre-)transitional disks relative to "full" disks with no gaps or holes.

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