The Gas/Dust Ratio of Circumstellar Disks: Testing Models of Planetesimal Formation

David Horne; Erika L. Gibb; Terrence W. Rettig; Sean Brittain; David Tilley; Dinshaw S. Balsara

doi:10.1088/0004-637X/754/1/64

The Gas/Dust Ratio of Circumstellar Disks: Testing Models of Planetesimal Formation

David Horne, Erika L. Gibb, Terrence W. Rettig, Sean Brittain, David Tilley, Dinshaw S. Balsara

University of Missouri-St. Louis

Research output: Contribution to journal › Article › peer-review

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 column density ratio and disk inclination similar to that found by Rettig et al.

Original language	American English
Journal	The Astrophysical Journal
Volume	754
DOIs	https://doi.org/10.1088/0004-637X/754/1/64
State	Published - Jul 6 2012

Disciplines

Astrophysics and Astronomy
Physics
Physical Sciences and Mathematics

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Cite this

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title = "The Gas/Dust Ratio of Circumstellar Disks: Testing Models of Planetesimal Formation",

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 column density ratio and disk inclination similar to that found by Rettig et al.",

author = "David Horne and Gibb, {Erika L.} and Rettig, {Terrence W.} and Sean Brittain and David Tilley and Balsara, {Dinshaw S.}",

year = "2012",

month = jul,

day = "6",

doi = "10.1088/0004-637X/754/1/64",

language = "American English",

volume = "754",

journal = "The Astrophysical Journal",

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TY - JOUR

T1 - The Gas/Dust Ratio of Circumstellar Disks: Testing Models of Planetesimal Formation

AU - Horne, David

AU - Gibb, Erika L.

AU - Rettig, Terrence W.

AU - Brittain, Sean

AU - Tilley, David

AU - Balsara, Dinshaw S.

PY - 2012/7/6

Y1 - 2012/7/6

N2 - 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 column density ratio and disk inclination similar to that found by Rettig et al.

AB - 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 column density ratio and disk inclination similar to that found by Rettig et al.

U2 - 10.1088/0004-637X/754/1/64

DO - 10.1088/0004-637X/754/1/64

M3 - Article

VL - 754

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -