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Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits
Molly R. Kosiarek, Ian J. M. Crossfield, Kevin K. Hardegree-Ullman +36
We report improved masses, radii, and densities for four planets in two bright M-dwarf systems, K2-3 and GJ3470, derived from a combination of new radial velocity and transit obser…
Deep exploration of Eridani with Keck Ms-band vortex coronagraphy and radial velocities: mass and orbital parameters of the giant exoplanet
Dimitri Mawet, Lea Hirsch, Eve J. Lee +27
We present the most sensitive direct imaging and radial velocity (RV) exploration of Eridani to date. Eridani is an adolescent planetary system, reminiscent of the early So…
The California-Kepler Survey. VI: Kepler Multis and Singles Have Similar Planet and Stellar Properties Indicating a Common Origin
Lauren M. Weiss, Howard T. Isaacson, Geoffrey W. Marcy +7
The California-Kepler Survey (CKS) catalog contains precise stellar and planetary properties for the \Kepler\ planet candidates, including systems with multiple detected transiting…
HAT-P-11: Discovery of a Second Planet and a Clue to Understanding Exoplanet Obliquities
Samuel W. Yee, Erik A. Petigura, Benjamin J. Fulton +10
HAT-P-11 is a mid-K dwarf that hosts one of the first Neptune-sized planets found outside the solar system. The orbit of HAT-P-11b is misaligned with the star's spin --- one of the…
Characterizing K2 Candidate Planetary Systems Orbiting Low-Mass Stars III: A High Mass & Low Envelope Fraction for the Warm Neptune K2-55b
Courtney D. Dressing, Evan Sinukoff, Benjamin J. Fulton +23
K2-55b is a Neptune-sized planet orbiting a K7 dwarf with a radius of , a mass of , and an effective temperature of $4300^{+1…
The California-Kepler Survey. IV. Metal-rich Stars Host a Greater Diversity of Planets
Erik A. Petigura, Geoffrey W. Marcy, Joshua N. Winn +7
Probing the connection between a star's metallicity and the presence and properties of any associated planets offers an observational link between conditions during the epoch of pl…