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
中科院分区:
文献类型:
--
作者:
Ogihara Masahiro;Kokubo Eiichiro;Suzuki Takeru K.;Morbidelli Alessandro;Crida Aurelien
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.
登录
查看更多内容
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
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
影响因子:
6.5
作者:
Bitsch, Bertram;Johansen, Anders;Morbidelli, Alessandro
通讯作者:
Morbidelli, Alessandro
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
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
A. Crida;A. Morbidelli
通讯作者:
A. Morbidelli