A Young Exoplanet Caught at Formation

Details A Young Exoplanet Caught at Formation A Young Exoplanet Caught at Formation

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21922803k&link_type=abstract

American Astronomical Society, AAS Meeting #219, #228.03

Astronomy and Astrophysics

Astronomy

Scientific paper

Young and directly-imaged exoplanets offer critical tests of planet-formation models that can't be matched by RV surveys of mature stars. These targets have been extremely elusive to date, with no exoplanets younger than 10-20 Myr and only a handful of direct-imaged exoplanets at all ages. We recently reported the discovery of a likely young protoplanet around LkCa 15. This protoplanet is embedded in a protoplanetary disk with a large cleared gap (a ``transitional disk'') and appears to orbit within that gap. In this talk, we will present an update on those results, summarizing our new astrometric and photometric observations and discussing their implications for the orbital and structural properties of the protoplanet. We also will discuss this system in the context of our ongoing survey to identify planets in transition disk gaps, including the implications for the process, epoch, and duration of planet formation.

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