Forming Earth-like Planets With Migrating Giants: Modeling and Observations

Details Forming Earth-like Planets With Migrating Giants: Modeling and Observations Forming Earth-like Planets With Migrating Giants: Modeling and Observations

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20919607m&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #196.07; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Close-in giant planets make up 40% of known extrasolar planets. These 'hot Jupiters' are thought to have formed in the cold outer regions of planetary systems and migrated inward via interactions with gaseous protoplanetary disks. During their migration, they pass through the orbital region where terrestrial planets in our own Solar System. I will present results of dynamical simulations of young planetary systems undergoing migration of a Jovian-type planet through the terrestrial region. We find that a significant fraction of the initial planetary embryos remain after giant planet migration, and subsequent evolution of the system results in the formation of terrestrial planets in various configurations, often including a water-rich planet in the Habitable Zone and/or a 'hot Earth' within the orbit of the 'hot Jupiter'. Additionally, I will highlight an on-going observational program to characterize the chemical environment in young circumstellar disks in order to pin down the initial conditions in which nascent systems begin forming.

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