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5 papers · 2 filters
Outward migration of a giant planet with a gravitationally unstable gap edge
Min-Kai Lin, John Papaloizou
We present numerical simulations of disc-planet interactions where the planet opens a gravitationally unstable gap in an otherwise gravitationally stable disc. In our disc models,…
55 Cancri: A Coplanar Planetary System that is Likely Misaligned with its Star
Nathan A. Kaib, Sean N. Raymond, Martin J. Duncan
Although the 55 Cnc system contains multiple, closely packed planets that are presumably in a coplanar configuration, we use numerical simulations to demonstrate that they are like…
Sedna and the Oort Cloud Around a Migrating Sun
Nathan A. Kaib, Rok Roškar, Thomas Quinn
Recent numerical simulations have demonstrated that the Sun's dynamical history within the Milky Way may be much more complex than that suggested by its current low peculiar veloci…
Warm Saturns: On the Nature of Rings around Extrasolar Planets that Reside Inside the Ice Line
Hilke E. Schlichting, Philip Chang
We discuss the nature of rings that may exist around extrasolar planets. Taking the general properties of rings around the gas giants in the Solar System, we infer the likely prope…
Broadband Transmission Spectroscopy of the super-Earth GJ 1214b suggests a Low Mean Molecular Weight Atmosphere
Bryce Croll, Loic Albert, Ray Jayawardhana +4
We used WIRCam on CFHT to observe four transits of the super-Earth GJ 1214b in the near-infrared. For each transit we observed in two bands nearly-simultaneously by rapidly switchi…