1. Institut de recherche sur les exoplanètes, Département de physique, Université de Montréal, 2900 boul. Édouard-Montpetit, Montréal, Quebec H3T 1J4, Canada
2. Department of Physics and McGill Space Institute, McGill University, 3600 rue University, Montreal, QC H3A 2T8, Canada
3. Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
4. Institute for Advanced Studies, Tsinghua University, Beijing, China