Effects of global gas flows on type I migration

Effects of global gas flows on type I migration
复制标题

全球气流对 I 类运移的影响

DOI:
10.1051/0004-6361/201730777
复制
发表时间:
2017
影响因子:
6.5
通讯作者:
Crida Aurelien
Crida Aurelien
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ogihara Masahiro;Kokubo Eiichiro;Suzuki Takeru K.;Morbidelli Alessandro;Crida Aurelien

文献摘要

参考文献

被引文献

相似文献

磁场驱动的盘风会改变原行星盘内部区域气体的表面密度斜率(r > 1 au)。这反过来又影响行星的形成。最近,人们考虑了圆盘风扭矩的影响,认为它会从内部切割出圆盘的表面密度,并会诱导全球气体流动(风驱动的吸积)。我们的目标是研究全球气体流动对I型迁移的影响,并研究行星的形成。方法采用一种简化的方法来解决这一问题,并进行了具有隔离质量行星的n体模拟。结果在以往的研究中,考虑了湍流驱动吸积引起的气体流动效应,考虑了其旋转力矩的去饱和效应。如果考虑更快速的气体流动(例如,风驱动的吸积),则可以修改去饱和效应。在核磁共振非活动盘中,风驱动的吸积主导了盘的演化,中间面的气体流动起着重要的作用。如果这个流量很快,旋转扭矩被有效地去饱和。然后,由于风转矩的作用,内部区域的表面密度斜率可以为正,从而产生一个向外迁移的区域,扩展到超级地球质量的行星。在这种情况下,我们观察到在n -体模拟中没有行星落在中心恒星上,施加了迁移力来重现这种迁移模式。我们还看到,超级地球质量的行星可以向外迁移。相对快速的气体流动影响了I型迁移,从而影响了近地行星的形成。
ContextMagnetically-driven disk winds would alter the surface density slope of gas in the inner region of a protoplanetary disk (r≲ 1 au). This in turn affects planet formation. Recently, the effect of disk wind torque has been considered with the suggestion that it would carve out the surface density of the disk from inside and would induce global gas flows (wind-driven accretion).AimsWe aim to investigate effects of global gas flows on type I migration and also examine planet formation.MethodsA simplified approach was taken to address this issue, andN-body simulations with isolation-mass planets were also performed.ResultsIn previous studies, the effect of gas flow induced by turbulence-driven accretion has been taken into account for its desaturation effect of the corotation torque. If more rapid gas flows (e.g., wind-driven accretion) are considered, the desaturation effect can be modified. In MRI-inactive disks, in which the wind-driven accretion dominates the disk evolution, the gas flow at the midplane plays an important role. If this flow is fast, the corotation torque is efficiently desaturated. Then, the fact that the surface density slope can be positive in the inner region due to the wind torque can generate an outward migration region extended to super-Earth mass planets. In this case, we observe that no planets fall onto the central star inN-body simulations with migration forces imposed to reproduce such migration pattern. We also see that super-Earth mass planets can undergo outward migration.ConclusionsRelatively rapid gas flows affects type I migration and thus the formation of close-in planets.
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
S. Fromang;W. Lyra;F. Masset
通讯作者: F. Masset
吸积盘中湍流的大尺度方位角结构:发电机触发的吸积变化
DOI: 10.1088/0004-637x/744/2/144
发表时间: 2011
期刊: The Astrophysical Journal
影响因子: --
作者:
M. Flock;N. Dzyurkevich;H. Klahr;N. J. Turner;N. J. Turner;T. Henning
通讯作者: T. Henning
DOI: 10.1051/0004-6361/201424964
发表时间: 2015-03-01
影响因子: 6.5
作者:
Bitsch, Bertram;Johansen, Anders;Morbidelli, Alessandro
通讯作者: Morbidelli, Alessandro
大质量双星系统中的自调节激波
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
E. Parkin;S. A. Sim;S. A. Sim
通讯作者: S. A. Sim
原行星盘中巨行星的空腔开口及其对行星迁移的影响
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
A. Crida;A. Morbidelli
通讯作者: A. Morbidelli