Finding new Hot Jupiters in low-cadence surveys using the Directed follow-up strategy

Event Date: 

Wednesday, November 13, 2013 - 4:00pm

Event Location: 

  • Broida Conference Room 3302

Event Contact: 

Andy Howell (


Yifat Dzigan (Weizmann postdoc)

Transiting exoplanets, and in particular Hot Jupiters around bright stars, are key ingredients for understanding planetary formation and migration theories, statistics of planetary properties and planetary dynamics, and are of the most favorable for observational study.

I will present a novel approach to use low-cadence photometric surveys, such as the promising Gaia Space mission for exoplanetary transit search. We find that even if transits are undetectable in the sparsely sampled data, the "Directed Follow-Up strategy" (DFU) can be used to choose preferred times for follow-up observations that will maximize the chances to detect transiting planets. Though low-cadence surveys are usually considered irrelevant for transit searches, Gaia's yield can reach a few thousands of new Hot Jupiters, if the Directed Follow-Up strategy will be applied to schedule and conduct a follow-up campaign. Scheduling the follow-up observations is a significant part of the strategy, therefore a global telescope network, such as LCOGT, that will be available at all times and in different locations, is ideal for optimizing the outcome of the strategy.