Formation of a disc gap induced by a planet: effect of the deviation from Keplerian disc rotation
Formation of a disc gap induced by a planet: effect of the deviation from Keplerian disc rotation
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行星引起的圆盘间隙的形成:开普勒圆盘旋转偏差的影响
DOI:
10.1093/mnras/stv025
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发表时间:
2015
影响因子:
4.8
通讯作者:
and T. Takeuchi
中科院分区:
文献类型:
--
作者:
K. D. Kanagawa;H. Tanaka;T. Muto;T. Tanigawa;and T. Takeuchi
The gap formation induced by a giant planet is important in the evolution of the planet and the protoplanetary disc. We examine the gap formation by a planet with a new formulation of one-dimensional viscous discs which takes into account the deviation from Keplerian disc rotation due to the steep gradient of the surface density. This formulation enables us to naturally include the Rayleigh stable condition for the disc rotation. It is found that the derivation from Keplerian disc rotation promotes the radial angular momentum transfer and makes the gap shallower than in the Keplerian case. For deep gaps, this shallowing effect becomes significant due to the Rayleigh condition. In our model, we also take into account the propagation of the density waves excited by the planet, which widens the range of the angular momentum deposition to the disc. The effect of the wave propagation makes the gap wider and shallower than the case with instantaneous wave damping. With these shallowing effects, our one-dimensional gap model is consistent with the recent hydrodynamic simulations.
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DOI:
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发表时间:
2013
期刊:
影响因子:
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期刊:
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通讯作者:
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DOI:
--
发表时间:
2009
期刊:
ApJ 701
影响因子:
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作者:
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