Document Type
Article
Publication Date
7-20-2012
Publication Title
The Astrophysical Journal
Volume
754
Issue
1
Publisher
The American Astronomical Society
Abstract
We present high-resolution, near-infrared NIRSPEC observations of CO absorption toward six class II T Tauri stars: AA Tau, DG Tau, IQ Tau, RY Tau, CW Tau, and Haro 6–5b. 12CO overtone absorption lines originating from the circumstellar disk of each object were used to calculate line-of-sight gas column densities toward each source. We measured the gas/dust ratio as a function of disk inclination, utilizing measured visual extinctions and inclinations for each star. The majority of our sources show further evidence for a correlation between the gas/dust columndensity ratio and disk inclination similar to that found by Rettig et al.
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This article has been published in the Astrophysical Journal. Please find the published version here (note that a subscription may be necessary to access this version):
http://iopscience.iop.org/0004-637X/754/1/64
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