Fakultät für Physik und Astronomie

Connecting Exoplanet Properties to Planet Formation: a New Paradigm Emerges

Prof. Ralph E. Pudritz , McMaster University

One of the great challenges of exoplanetary astrophysics is to understand how the observed properties of exoplanets – their masses, orbital characteristics, bulk properties and atmospheric composition – arise as a consequence of how planets are formed in protoplanetary disks. Where and what materials planets accrete from the disk depends in part upon how they migrate and how the gas and dust in the disks evolve both chemically and dynamically. The vast majority of papers over the last decades have assumed that disk turbulence is the fundamental driver of most of these processes. Recent theoretical and observational advances however point to the importance of the ubiquitous protostellar outflows, now shown observationally to be magnetohydrodynamical disk winds, as the key player. In this talk I will discuss the recent advances in observations, theory, and simulations of planet formation and explore the relative importance of disk winds versus turbulence in controlling planet formation and the observed properties and compositions of exoplanetary populations. Those unable to attend the colloquium in person are invited to participate online through Zoom (Meeting ID: 942 0262 2849, passcode 792771) using the link: https://zoom.us/j/94202622849?pwd=dGlPQXBiUytzY1M2UE5oUDRhbzNOZz09 Prof. Pudritz is visiting the Institut fuer Theoretisches Astrophysik and is available for meetings by arrangement with his host, Ralf Klessen (klessen@uni-heidelberg.de).

Heidelberg Joint Astronomical Colloquium
24 Jan 2023, 16:00
Physikalisches Institut, Philosophenweg 12, Main lecture theatre

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