论文标题
通过磁性驱动和光蒸发风的结合，原动性磁盘的分散
Dispersal of protoplanetary disks by the combination of magnetically driven and photoevaporative winds
论文作者
论文摘要
我们研究了磁驱动的磁盘风（MDW）和热驱动的光蒸发风（PEW）在长期演化的原星磁盘中的作用。我们从早期阶段开始模拟磁盘质量为$ 0.118 \，{\ mathrm {m} _ {\ odot}} $周围$ 1 \，{\ mathrm {\ mathrm {m} _ {\ odot}}} $ a of $ 1 \，{\ mathrm {\ mathrm {\ mathrm {\ odot}} $，直到磁盘完全不完整直到磁盘完全分配。除了粘性积聚，粘性加热和出色的照射外，我们还通过Pew以及MDW的质量损失和磁制动（风转矩）结合了质量损失。我们发现MDW和PEW分别具有不同的作用：在早期阶段，磁性驱动的风从内磁盘弹出材料，而光蒸发在晚期（$ \ gtrsim1 \，$ au）磁盘中的晚期中具有主要作用。磁盘寿命取决于MDW，Pew和粘性积聚的组合，显示出$ \ sim1 $ - $ 20 \，$ MYR的大变化；在粘度低的情况下，气体主要由MDW和PEW分散，寿命对MDW的质量损失速率和扭矩敏感，而当粘度高时，寿命对这些参数不敏感。即使在湍流非常弱的磁盘中，MDW和Pew的合作也可以使磁盘散布在一些Myr中。
We investigate the roles of magnetically driven disk wind (MDW) and thermally driven photoevaporative wind (PEW) in the long-time evolution of protoplanetary disks. We start simulations from the early phase in which the disk mass is $0.118\,{\mathrm{M}_{\odot}}$ around a $1\,{\mathrm{M}_{\odot}}$ star and track the evolution until the disk is completely dispersed. We incorporate the mass loss by PEW and the mass loss and magnetic braking (wind torque) by MDW, in addition to the viscous accretion, viscous heating, and stellar irradiation. We find that MDW and PEW respectively have different roles: magnetically driven wind ejects materials from an inner disk in the early phase, whereas photoevaporation has a dominant role in the late phase in the outer ($\gtrsim1\,$au) disk. The disk lifetime, which depends on the combination of MDW, PEW, and viscous accretion, shows a large variation of $\sim1$-$20\,$Myr; the gas is dispersed mainly by the MDW and the PEW in the cases with a low viscosity and the lifetime is sensitive to the mass-loss rate and torque of the MDW, whereas the lifetime is insensitive to these parameters when the viscosity is high. Even in disks with very weak turbulence, the cooperation of MDW and PEW enables the disk dispersal within a few Myr.
