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Astronomy Tea Talk

Tuesday, December 10, 2013
4:15pm to 5:00pm
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Cahill, Hameetman Auditorium
The Mid-Infrared Properties of Directly Imaged Exoplanets
Andrew Skemer, Arizona,

Gas-giant planets emit a large fraction of their light in the mid-infrared (>3 microns), where photometry and spectroscopy are critical to our understanding of the bulk properties of extrasolar planets. Of particular importance are the L and M-band atmospheric windows (3-5 micron), which are the longest wavelengths currently accessible to ground-based, high-contrast imagers.

I will describe how recent LBT and Magellan photometry of HR 8799 and 2M1207 b impact our picture of the dynamical atmospheres of exoplanets, and what our results imply for future exoplanet imaging projects, such as JWST.  Additionally, I will describe the state of the Large Binocular Telescope Interferometer, which is beginning a large exoplanet imaging survey (LEECH) and a first reconnaissance of exozodiacal dust around nearby stars (HOSTS).

For more information, please contact Luca Ricci and Dan Perley by phone at 626-395-2460 and 626-395-3734 or by email at lricci@astro.caltech.edu and dperley@astro.caltech.edu.