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New Constraints on Turbulence and Embedded Planet Mass in the HD 163296 Disk from Planet–Disk Hydrodynamic Simulations
Liu,Shang-Fei1,2; Jin,Sheng2,3; Li,Shengtai2; Isella,Andrea1; Li,Hui2
2018-04-18
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume857Issue:2
AbstractAbstract Recent Atacama Large Millimeter and Submillimeter Array (ALMA) observations of the protoplanetary disk around the Herbig Ae star HD 163296 revealed three depleted dust gaps at 60, 100, and 160 au in the 1.3 mm continuum as well as CO depletion in the middle and outer dust gaps. However, no CO depletion was found in the inner dust gap. To examine the planet–disk interaction model, we present results of 2D two fluid (gas + dust) hydrodynamic simulations coupled with 3D radiative transfer simulations. To fit the high gas-to-dust ratio of the first gap, we find that the Shakura–Sunyaev viscosity parameter α must be very small ( ) in the inner disk. On the other hand, a relatively large α ( ) is required to reproduce the dust surface density in the outer disk. We interpret the variation of α as an indicator of the transition from an inner dead zone to the outer magnetorotational instability (MRI) active zone. Within ~100 au, the HD 163296 disk’s ionization level is low, and non-ideal magnetohydrodynamic effects could suppress the MRI, so the disk can be largely laminar. The disk’s ionization level gradually increases toward larger radii, and the outermost disk ( au) becomes turbulent due to MRI. Under this condition, we find that the observed dust continuum and CO gas line emissions can be reasonably fit by three half-Jovian-mass planets (0.46, 0.46, and ) at 59, 105, and 160 au, respectively.
Keywordhydrodynamics planet–disk interactions planets and satellites: formation protoplanetary disks stars: individual (HD 163296) turbulence
DOI10.3847/1538-4357/aab718
Language英语
WOS IDIOP:0004-637X-857-2-aab718
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23505
Collection中国科学院紫金山天文台
Affiliation1.Department of Physics and Astronomy, Rice University, 6100 Main St., Houston, TX 77005, USA; shangfei.liu@gmail.com, isella@rice.edu
2.Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA; sli@lanl.gov, hli@lanl.gov
3.Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China; shengjin@pmo.ac.cn
Recommended Citation
GB/T 7714
Liu,Shang-Fei,Jin,Sheng,Li,Shengtai,等. New Constraints on Turbulence and Embedded Planet Mass in the HD 163296 Disk from Planet–Disk Hydrodynamic Simulations[J]. The Astrophysical Journal,2018,857(2).
APA Liu,Shang-Fei,Jin,Sheng,Li,Shengtai,Isella,Andrea,&Li,Hui.(2018).New Constraints on Turbulence and Embedded Planet Mass in the HD 163296 Disk from Planet–Disk Hydrodynamic Simulations.The Astrophysical Journal,857(2).
MLA Liu,Shang-Fei,et al."New Constraints on Turbulence and Embedded Planet Mass in the HD 163296 Disk from Planet–Disk Hydrodynamic Simulations".The Astrophysical Journal 857.2(2018).
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