SSP seminar

The Time History of Terrestrial and Icy Planet Formation As Reconstructed from Spitzer

Thayne Currie (CfA)

Monday 16th June 2008, 1:00pm
Phillips auditorium, 60 Garden Street

Studying circumstellar disk evolution and planet formation around other stars provides a context for the formation our Solar System as well as the rapidly expanding sample of known extrasolar planets. In this talk, I discuss recent results on disk evolution and planet formation from the Spitzer Space Telescope, focusing on observations of h and chi Persei, IC 348, and other 3 Myr to 25 Myr old open clusters. These results provide the strongest constraints yet on a) the primordial to debris disk transition, b) the lifetime of nebular gas required to form Jovian planets, c) the time history of terrestrial planet formation, and d) planet formation in ice giant/Kuiper belt regions. I discuss challenges that these results pose for theoretical models of planet formation, implications these results have for the timescale required for planet building, and their potential to explain observed trends in in exoplanetary systems, particularly for systems with hot Jupiters.


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