| Seminar: | CPS Seminar |
| date: | 2016 June 29 (Wed) 16:00-17:30 |
| room: | CPS Conference Room |
| speaker: | Toshikazu Ebisuzaki (Ph.D.,RIKEN ) |
| organizer: | Junichiro Makino |
| title: | Tandem Planet Formation |
| abstract: | We construct one dimensional model of for the evolution of a protoplanetary nebula, taking into account the turbulence by magneto-rotational instability. We obtained steady state solutions of alpha-accretion disk. We found that a turbulent-free region appears around the mid-plain of the disk between the outer and inner turbulent regions. Icy particles and rocky particles accumulate and undergo gravitational instability to form planetesimals respectively in the outer and inner boundaries of the turbulent free region. The icy and rocky planetesimals still grow to the rocky planets and the cores of gas giants respectively by the accretion of pebbles supplied to the planet forming region from the outside. We names it as "Tandem Planet Formation model," since particles accumulate in the two distinct sites to form planet effectively. |
| keywords: | Accretion Disk, Magneto-rotational Instability, Porous aggregation, Gravitational Instability, Planet Migration |