Seminar Series

Characterising planets by their transits and eclipses

George Zhou, Australian National Observatory

06 Nov 2014 - 15:30

Planets that transit their host stars can be characterised by a range of in-depth observations. Transiting planets are key to understanding the atmospheres, composition, and dynamics of exoplanets. In this talk, I will describe some of the exoplanet characterisation studies that we have undertaken, using both ground-based eclipse observations and Kepler transit photometry.

I will introduce the Anglo-Australian Telescope survey of hot-Jupiter eclipses, a new survey we are undertaking to measure the infrared, multi-band secondary eclipses for a large number of southern hot-Jupiters. These observations are providing a set of temperatures and colours to characterise the most irradiated hot-Jupiters. I will also describe our modelling of Kepler transit light curves. We show that we can measure the spin-orbit alignment for very long period planets orbiting gravity-darkened stars. We can also measure the shapes of the planets themselves, and search for rapidly rotating, oblate planets observed by Kepler.

LCO Seminar Series,
6740 Cortona Dr, Suite 102,
Goleta, CA 93117