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The formation and survival of planets: easier to grow but harder to keep alive

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If you have a question about this talk, please contact Dr. Jaroslav Dudik .

The large number of extra-solar planets discovered over the last two decades shows the existence of a huge diversity in their properties. For these planets to be observed, their growth and survivability in their parent circumstellar discs are very important to understand. I will firstly focus on the initial growth of dust in discs. I will present a new physically-motivated model for dust growth and show that growth can occur to larger sizes than seen previously. Once planets form, they will interact with their parent disc. Upon doing so, they will open up gaps, which is a crucial stage for planet survivability. I will present some recent results which show that gap-opening by planets appears to be harder than previously thought and will discuss the implications for observations and theoretical models.

This talk is part of the DAMTP Astrophysics Seminars series.

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CRASSH City House, Hills Road, Cambridge CB2 1RY Medsin Cambridge

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