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27 papers · 2 filters
2007 TY430: A Cold Classical Kuiper Belt Type Binary in the Plutino Population
Scott S. Sheppard, Darin Ragozzine, Chadwick Trujillo
(Abridged) 2007 TY430 is the first wide, equal-sized, binary known in the 3:2 mean motion resonance with Neptune. The binary has a maximum separation of 1 arcsec with less than 0.1…
Kepler-22b: A 2.4 Earth-radius Planet in the Habitable Zone of a Sun-like Star
William J. Borucki, David G. Koch, Natalie Batalha +80
A search of the time-series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting the 11th magnitude G5 dwarf KIC 10593626 with a period of 290 da…
A High Stellar Obliquity in the WASP-7 Exoplanetary System
Simon Albrecht, Joshua N. Winn, R. Paul Butler +5
We measure a tilt of 86+-6 deg between the sky projections of the rotation axis of the WASP-7 star, and the orbital axis of its close-in giant planet. This measurement is based on…
Astrometry and radial velocities of the planet host M dwarf GJ 317: new trigonometric distance, metallicity and upper limit to the mass of GJ 317b
Guillem Anglada-Escudé, Alan P. Boss, Alycia J. Weinberger +4
We have obtained precision astrometry of the planet hosting M dwarf GJ 317 in the framework of the Carnegie Astrometric Planet Search project. The new astrometric measurements give…
Mineralogical Characterization of Baptistina Asteroid Family: Implications for K/T Impactor Source
Vishnu Reddy, Jorge M. Carvano, Daniela Lazzaro +8
Bottke et al. (2007) linked the catastrophic formation of Baptistina Asteroid Family (BAF) to the K/T impact event. This linkage was based on dynamical and compositional evidence,…
Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16A
Joshua N. Winn, Simon Albrecht, John Asher Johnson +31
Kepler-16 is an eccentric low-mass eclipsing binary with a circumbinary transiting planet. Here we investigate the angular momentum of the primary star, based on Kepler photometry…