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The Mass of Kepler-93b and The Composition of Terrestrial Planets
Courtney D. Dressing, David Charbonneau, Xavier Dumusque +32
Kepler-93b is a 1.478 +/- 0.019 Earth radius planet with a 4.7 day period around a bright (V=10.2), astroseismically-characterized host star with a mass of 0.911+/-0.033 solar mass…
Characterizing K2 Planet Discoveries: A super-Earth transiting the bright K-dwarf HIP 116454
Andrew Vanderburg, Benjamin T. Montet, John Asher Johnson +43
We report the first planet discovery from the two-wheeled Kepler (K2) mission: HIP 116454 b. The host star HIP 116454 is a bright (V = 10.1, K = 8.0) K1-dwarf with high proper moti…
Observations of Cepheids with the MOST satellite: Contrast between Pulsation Modes
N. R. Evans, R. Szabó, A. Derekas +10
The quantity and quality of satellite photometric data strings is revealing details in Cepheid variation at very low levels. Specifically, we observed a Cepheid pulsating in the fu…
Characterization of the Kepler-101 planetary system with HARPS-N. A hot super-Neptune with an Earth-sized low-mass companion
A. S. Bonomo, A. Sozzetti, C. Lovis +32
We report on the characterization of the Kepler-101 planetary system, thanks to a combined DE-MCMC analysis of Kepler data and forty radial velocities obtained with the HARPS-N spe…
A stable quasi-periodic 4.18 d oscillation and mysterious occultations in the 2011 MOST light curve of TWHya
Michal Siwak, Slavek M. Rucinski, Jaymie M. Matthews +5
We present an analysis of the 2011 photometric observations of TW Hya by the MOST satellite; this is the fourth continuous series of this type. The large-scale light variations are…
Structure and Dynamics of Cold Water Super-Earths: The Case of Occluded CH4 and its Outgassing
Amit Levi, Dimitar Sasselov, Morris Podolak
We study the transport of methane in the external water envelopes surrounding water-rich super-Earths and estimate its outgassing into the atmosphere. We investigate the influence…