My CV (updated August 2017).

My publication list on ADS.

I study exoplanetary systems of all kinds. I am currently focusing on small transiting exoplanets orbiting bright, nearby stars. Such systems are our best chance for exploring the properties of planets smaller than Neptune.

I have used the MOST space telescope to search for and find bright transiting systems. MOST is a suitcase-sized satellite with an aperture of just 15 cm, but can reach a precision of less than 100 parts per million. It has discovered the only super-Earths known to transit stars brighter than V = 9.



Image credit: Canadian Space Agency/www.space.gc.ca


In 2013, I used MOST to discover that HD 97658b, a super-Earth orbiting a K dwarf, crosses the disk of its host star and produces transits. This means we can measure not only the planet's radius (this is how we learned it was a super-Earth!), but also its atmosphere.




One such system orbits the star 55 Cnc, which is so bright it can be seen with the naked eye. The innermost planet, 55 Cnc e, is known to transit. It measures twice the size of the Earth and has an orbital period of just 18 hours, which makes 55 Cnc e one extremely hot planet.



Image credit: NASA/JPL-Caltech/R. Hurt (SSC)