盘腔边界行星捕获的三维模拟
3D Simulations of Planet Trapping at Disc-Cavity Boundaries
摘要：
低质量行星和巨行星胚胎的向内迁移可以由于共轨共转力矩而停止在盘腔边界处。我们进行了第一次全球三维（3D）模拟行星迁移的盘腔边界，并已表明，边界是一个强大的陷阱，低质量的行星和胚胎。一个原行星盘可能在离恒星不同距离的地方有几个这样的捕获区域，例如在恒星磁层的边缘，死区的内缘，尘埃升华半径和雪线。共转陷阱位于不同的距离，从一个恒星，并在光盘分散阶段向外移动，可能会解释所观察到的均匀分布的低质量行星与距离他们的主恒星。
英文摘要：
Inward migration of low-mass planets and embryos of giant planets can be stopped at the disc-cavity boundaries due to co-orbital corotation torque. We performed the first global three-dimensional (3D) simulations of planet migration at the disc-cavity boundary, and have shown that the boundary is a robust trap for low-mass planets and embryos. A protoplanetary disc may have several such trapping regions at various distances from the star, such as at the edge of the stellar magnetosphere, the inner edge of the dead zone, the dust-sublimation radius and the snow lines. Corotation traps located at different distances from a star, and moving outward during the disc dispersal phase, may possibly explain the observed homogeneous distribution of low-mass planets with distance from their host stars.
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