THE GAS/DUST RATIO OF CIRCUMSTELLAR DISKS: TESTING MODELS OF PLANETESIMAL FORMATION

Journal Article · Fri Jul 20 00:00:00 EDT 2012 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/754/1/64· OSTI ID:22039277

Horne, David ^[1]; Gibb, Erika ^[2]; Rettig, Terrence W; Tilley, David; Balsara, Dinshaw ^[3]; Brittain, Sean ^[4]

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1. New York Center for Astrobiology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY 12180-3590 (United States)
2. Department of Physics and Astronomy, University of Missouri-St. Louis, 8001 Natural Bridge Road, St. Louis, MO 63121 (United States)
3. Center for Astrophysics, University of Notre Dame, Notre Dame, IN 46556 (United States)
4. Department of Physics and Astronomy, Clemson University, Clemson, SC 29634-0978 (United States)

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. {sup 12}CO 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 column density ratio and disk inclination similar to that found by Rettig et al.

• OSTI ID: 22039277
• Journal Information: Astrophysical Journal, Vol. 754, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
ABSORPTION SPECTRA
ASTRONOMY
ASTROPHYSICS
CARBON 12
CARBON MONOXIDE
CORRELATIONS
COSMIC DUST
COSMIC GASES
DENSITY
INCLINATION
NEAR INFRARED RADIATION
PLANETS
PROTOSTARS
RESOLUTION
SATELLITES
T TAURI STARS