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18 papers · 2 filters
Triplicity and Physical Characteristics of Asteroid (216) Kleopatra
Pascal Descamps, F. Marchis, J. Berthier +16
To take full advantage of the September 2008 opposition passage of the M-type asteroid (216) Kleopatra, we have used near-infrared adaptive optics (AO) imaging with the W.M. Keck I…
Transmission Spectra of Transiting Planet Atmospheres: Model Validation and Simulations of the Hot Neptune GJ 436b for JWST
Megan Shabram, Jonathan J. Fortney, Thomas P. Greene +1
We explore the transmission spectrum of the Neptune-class exoplanet GJ 436b, including the possibility that its atmospheric opacity is dominated by a variety of non- equilibrium ch…
Formation of asteroid pairs by rotational fission
P. Pravec, D. Vokrouhlicky, D. Polishook +23
Asteroid pairs sharing similar heliocentric orbits were found recently. Backward integrations of their orbits indicated that they separated gently with low relative velocities, but…
A Dynamical Solution of the Triple Asteroid System (45) Eugenia
F. Marchis, V. Lainey, P. Descamps +9
We present the first dynamical solution of the triple asteroid system (45) Eugenia and its two moons Petit-Prince (Diameter~7 km) and S/2004 (45) 1 (Diameter~5 km). The two moons o…
Modeling Kepler transit light curves as false positives: Rejection of blend scenarios for Kepler-9, and validation of Kepler-9d, a super-Earth-size planet in a multiple system
Guillermo Torres, François Fressin, Natalie M. Batalha +26
Light curves from the Kepler Mission contain valuable information on the nature of the phenomena producing the transit-like signals. To assist in exploring the possibility that the…
Characteristics of Kepler Planetary Candidates Based on the First Data Set: The Majority are Found to be Neptune-Size and Smaller
William J. Borucki
In the spring of 2009, the Kepler Mission commenced high-precision photometry on nearly 156,000 stars to determine the frequency and characteristics of small exoplanets, conduct a…