The role of disk self-gravity on gap formation of the HL Tau proto-planetary disk

10th International Conference on Numerical Modeling of Space Plasma Flows: ASTRONUM-2015

Li, Shengtai^1 ; Li, Hui^1

Theoretical Division, Los Alamos National Laboratory, United States, Los Alamos

NM

87545, United States^1

关键词: Atacama Large Millimeter/sub-millimeter Array (ALMA);    Axisymmetric;    Gap formation;    Gap structures;    Protoplanetary disks;    Ring structures;    Surface density;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/719/1/012007/pdf
DOI  :  10.1088/1742-6596/719/1/012007

来源: IOP

【 摘 要 】

We use extensive global hydrodynamic disk gas+dust simulations with embedded planets to model the dust ring and gap structures in the HL Tau protoplanetary disk observed with the Atacama Large Millimeter/Submillimeter Array (ALMA). Since the HL Tau is a relatively massive disk, we find the disk self-gravity (DSG) plays an important role in the gap formation induced by the planets. Our simulation results demonstrate that DSG is necessary in explaining of the dust ring and gap in HL Tau disk. The comparison of simulation results shows that the dust rings and gap structures are more evident when the fully 2D DSG (non-axisymmetric components are included) is used than if 1D axisymmetric DSG (only the axisymetric component is included) is used, or the disk self-gravity is not considered. We also find that the couple dust+gas+planet simulations are required because the gap and ring structure is different between dust and gas surface density.