Published in The Astrophysical Journal
We present astrophysical false positive probability calculations for every Kepler Object of Interest (KOI)—the first large-scale demonstration of a fully automated transiting planet validation procedure. Out of 7056 KOIs, we determine that 1935 have probabilities
Published in The Astrophysical Journal
The late stages of terrestrial planet formation are dominated by giant impacts that collectively influence the growth, composition, and habitability of any planets that form. Hitherto, numerical models designed to explore these late stage collisions have been limited by assuming that all collisions lead to perfect accretion, and many of these studi...
We present the discovery of a new satellite of asteroid (130) Elektra - S/2014 (130) 1 - in differential imaging and in integral field spectroscopy data over multiple epochs obtained with SPHERE/VLT. This new (second) moonlet of Elektra is about 2 km across, on an eccentric orbit and about 500 km away from the primary. For a comparative study, we a...
Published in The Astrophysical Journal
The Institute of Physics (IOP) is a leading scientific society promoting physics and bringing physicists together for the benefit of all. It has a worldwide membership of around 50 000 comprising physicists from all sectors, as well as those with an interest in physics. It works to advance physics research, application and education; and engages wi...
Published in The Astrophysical Journal
We infer dynamical masses in eight multiplanet systems using transit times measured from Kepler s complete data? set, including short-cadence data where available. Of the 18? dynamical masses that we infer, 10? pass multiple tests for robustness. These are in systems? Kepler-26 (KOI-250), Kepler-29 (KOI-738), Kepler-60 (KOI-2086), Kepler-105 (KOI-1...
Published in The Astrophysical Journal
Determining which small exoplanets have stony-iron compositions is necessary for quantifying the occurrence of such planets and for understanding the physics of planet formation. Kepler-10 hosts the stony-iron world Kepler-10b, and also contains what has been reported to be the largest solid silicate-ice planet, Kepler-10c. Using 220 radial velocit...
Published in The Astrophysical Journal
We describe a new metric that uses machine learning to determine if a periodic signal found in a photometric time series appears to be shaped like the signature of a transiting exoplanet. This metric uses dimensionality reduction and k-nearest neighbors to determine whether a given signal is sufficiently similar to known transits in the same data s...
Published in The Astrophysical Journal
Kepler-296 is a binary star system with two M-dwarf components separated by 0 farcs 2. Five transiting planets have been confirmed to be associated with the Kepler-296 system; given the evidence to date, however, the planets could in principle orbit either star. This ambiguity has made it difficult to constrain both the orbital and physical propert...
Published in The Astrophysical Journal
We measure planet occurrence rates using the planet candidates discovered by the Q1-Q16 Kepler pipeline search. This study examines planet occurrence rates for the Kepler GK dwarf target sample for planet radii, $0.75\;\ leqslant\; $ $R _ \ rm p $ $\;\ leqslant $2.5$R _ \ oplus $, and orbital periods, $50\;\ leqslant $ $P _ \ mathrm orb $ $\ leqsla...
Published in The Astrophysical Journal
We study the evolution of planetesimals in evolved gaseous disks that orbit a solar- mass star and harbor a Jupiter-mass planet at $a _ p\ approx 5$ AU. The gas dynamics are modeled with a three-dimensional hydrodynamics code that employs nested grids and achieves a resolution of one Jupiter radius in the circumplanetary disk. The code models solid...
