Primordial atmospheres of forming rocky planets: the feedback from the pebble destruction

By now we know that most stars (Cassan et al., 2012) host at least one planet in their systems. Recently, spatially resolved observations of young disks with ALMA (e.g. Andrews et al., 2016) indicate that planet formation starts early. What remains uncertain, however, is how protoplanets grow efficiently and quickly enough under realistic conditions to agree with recent observations. The process of "pebble accretion" (Bitsch et al (2015), Chatterjee et al. (2014), Visser & Ormel (2016), etc.) is suspected to be an important part of the growth process. The topic of exoplanets and planet formation is one that holds a strong and growing public interest as we learn more from both observations and simulations.

In this talk I will discuss the daily lives of primordial atmospheres, surrounding the cores of forming rocky planets: how do they look like, why are they there, how they grow and evolve, how they interact with the surrounding disk, and what are we doing to better understand them.

Andrius Popovas — Niels Bohr Institute, Kopenhagen, Denmark
Thursday 30 March 2017, 12:00
Location: C4.174