Abstract

Title: Saving Low-mass Planets in Dusty Protoplanetary Disks

Speaker: Dr. He-Feng Hsieh (NTHU)

Date: March 31 at 14:30

Location: R521, General Building II

Planets formed in protoplanetary disks interact with the disks and experience orbital migrations. In particular, low-mass planets are expected to undergo rapid inwards migration and lost to the central star. It is then difficult to explain the enormous low-mass exoplanets discovered so far. Recent studies have shown that in dust-laden disks, various dust substructures can be induced in the vicinity of planets, which could have significant effects on disk-planet interactions. In this talk, I will present the migration behavior of low-mass planets in dusty protoplanetary disks, obtained from 2D two-fluid hydrodynamic simulations. I will discuss the new recovered regime of stochastic migration, applicable to disks with abundant large dust particles, where low-mass planets can survive in disks.