Modeling protoplanetary disk evolution in young star forming regions

Martijn Wilhelm (Lieden)
Friday, September 2, 2022 - 11:00am to 12:00pm

Many stars form in stellar clusters that dissolve into the galactic field on timescales of tens to hundreds of millions of years. Planet formation takes place in a protoplanetary disk around a young star, and these disks have typical lifetimes of a few millions years. The process of planet formation thus typically takes place in a stellar cluster environment. Understanding the impact of this environment on protoplanetary disks, and subsequently on planet formation, requires multi-scale, multi-physics models. I will report on recent simulations of protoplanetary disk populations in young star forming regions. These
simulations combine the collapse of a giant molecular cloud, the formation of stars, and stellar feedback (using the Torch model), with the evolution of protoplanetary disks around the newly formed stars. These disks evolve viscously, and are subject to truncation due to stellar encounters and to evaporation due to radiation from nearby massive stars. I will focus on the importance of the extinction of photoevaporating radiation due to intracluster gas on the early
evolution of the protoplanetary disks.

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