Cornell University

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Origin, Evolution, and Destiny of Close-in Super Earths

Thursday, October 17, 2013 at 4:00pm to 5:00pm

Space Sciences Building, 105

Planetary astrophysics is the most exciting and fastest
growing branch of astronomy today.  New data obtained from
systematic radial velocity surveys and Kepler transit
surveys have led to the discovery of nearly 900 planets
and 3000 additional candidates, many of which are multiple
systems.  Although their presence is ubiquitous around
nearby stars, their kinematic and structure properties
appear to be diverse. Based on these rich data, I will
present some theoretical analyses which may enable us
to extract information about their origin, evolution, and
structure.  I will discuss the process of planet migration
in evolving protostellar disks, the interaction of stellar
magnetic fields with protostellar disks and close-in planets,
tidal evolution of close-in companions, the potential
retention of volatile elements and loss of atmosphere.
These effects are incorporated into population synthesis
models and the construction of scenarios for the retention
of close-in planets, the observed obliquity between
stellar spins and planet's orbits, density, and composition.

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Event Type

Lecture

Website

http://www.astro.cornell.edu/events/c...

Contact E-Mail

mla20@cornell.edu

Contact Name

Monica Armstrong

Contact Phone

607-255-3727

Speaker

Douglas N.C. Lin

Speaker Affiliation

University of California, Santa Cruz, CA

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