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Non-detection of Contamination by Stellar Activity in the Spitzer Transit Light Curves of TRAPPIST-1
Brett M. Morris, Eric Agol, Leslie Hebb +6
We apply the transit light curve self-contamination technique of Morris et al. (2018) to search for the effect of stellar activity on the transits of the ultracool dwarf TRAPPIST-1…
The 55 Cnc system reassessed
V. Bourrier, X. Dumusque, C. Dorn +9
Orbiting a bright, nearby star the 55 Cnc system offers a rare opportunity to study a multiplanet system that has a wide range of planetary masses and orbital distances. Using two…
The 0.8-4.5m broadband transmission spectra of TRAPPIST-1 planets
E. Ducrot, M. Sestovic, B. M. Morris +18
The TRAPPIST-1 planetary system represents an exceptional opportunity for the atmospheric characterization of temperate terrestrial exoplanets with the upcoming James Webb Space Te…
SPECULOOS: a network of robotic telescopes to hunt for terrestrial planets around the nearest ultracool dwarfs
Laetitia Delrez, Michael Gillon, Didier Queloz +18
We present here SPECULOOS, a new exoplanet transit search based on a network of 1m-class robotic telescopes targeting the 1200 ultracool (spectral type M7 and later) dwarfs b…
Investigating hot-Jupiter inflated radii with hierarchical Bayesian modelling
Marko Sestovic, Brice-Olivier Demory, Didier Queloz
As of today, hundreds of hot Jupiters have been found, yet the inflated radii of a large fraction of them remain unexplained. It is still unclear whether a single inflation mechani…
The Peculiar Atmospheric Chemistry of KELT-9b
Daniel Kitzmann, Kevin Heng, Paul B. Rimmer +6
The atmospheric temperatures of the ultra-hot Jupiter KELT-9b straddle the transition between gas giants and stars, and therefore between two traditionally distinct regimes of atmo…