School of Physics and Astronomy

Astronomy Unit Seminar - How to Form the First Planets?

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28 September 2018

Time: 2:30 - 4:30pm
Speaker: Joanna Drążkowska
Venue: G. O. Jones Building, Room 610

In recent years it became clear that planet formation is a rule rather than an exception. Nevertheless, this process remains poorly understood. This talk will be focussed on the earliest stages of planet formation when small dust grains present in disks surrounding young stars grow towards the building blocks of planets, called planetesimals. I will give a broad introduction to the protoplanetary dust evolution field, including fundamental physical processes, possible modelling techniques as well as the problem of growth barriers. I will discuss possible scenarios of overcoming the growth barriers and forming the first planetesimals and planets. I will present my recent work on planetesimal formation in so-called pebble pile-ups and highlight the importance of water condensation front in triggering planet formation.