Journal
ASTROPHYSICAL JOURNAL
Volume 808, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/808/1/102
Keywords
circumstellar matter; protoplanetary disks; radio continuum: stars; stars: pre-main sequence; techniques: interferometric
Categories
Funding
- NSF [ACI-1053575]
- CARMA partner universities
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1139998] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1140019] Funding Source: National Science Foundation
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We present continuum observations at lambda = 1.3 and 2.7 mm using the Combined Array for Research in Millimeter-wave Astronomy toward six protoplanetary disks in the Taurus molecular cloud: CI Tau, DL Tau, DO Tau, FT Tau, Haro 6-13, and HL Tau. We constrain physical properties of the disks with Bayesian inference using two disk models: the flared power-law disk model and flared accretion disk model. Comparing the physical properties, we find that the more extended disks are less flared and that the dust opacity spectral index (beta) is smaller in the less massive disks. In addition, disks with a steeper mid-plane density gradient have a smaller beta, which suggests that grains grow and radially move. Furthermore, we compare the two disk models quantitatively and find that the accretion disk model provides a better fit overall. We also discuss the possibilities of substructures on three extended protoplanetary disks.
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