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Exoplanets Hidden by Stellar Activity

The detection extra-solar planets through radial-velocity searches is likely limited by the intrinsic magnetic activity of the host stars. The correlated « noise » that arises from their natural radial-velocity variability (jitter) can easily mimic and hide the orbital signals of super-Earth and Earth-mass exoplanets, or even of a giant planets for the most active and young stars.


The modeling of the RV jitter is thus essential to extrasolar planets searches. I will present here different techniques used to filter out the RV activity jitter and that allowed to unveil one of the youngest hot Jupiter discovered so far, V830 Tau b.

Cody Hall

Elodie Hebrard (York University)

September 30, 2016
14:00 - 15:00