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Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
Paul G. Beck, Josefina Montalban, Thomas Kallinger +21
When the core hydrogen is exhausted during stellar evolution, the central region of a star contracts and the outer envelope expands and cools, giving rise to a red giant, in which…
Kepler-21b: A 1.6REarth Planet Transiting the Bright Oscillating F Subgiant Star HD 179070
Steve B. Howell, Jason F. Rowe, Stephen T. Bryson +63
We present Kepler observations of the bright (V=8.3), oscillating star HD 179070. The observations show transit-like events which reveal that the star is orbited every 2.8 days by…
Kepler-16: A Transiting Circumbinary Planet
Laurance R. Doyle, Joshua A. Carter, Daniel C. Fabrycky +46
We report the detection of a planet whose orbit surrounds a pair of low-mass stars. Data from the Kepler spacecraft reveal transits of the planet across both stars, in addition to…
The Kepler-19 System: A Transiting 2.2 R_Earth Planet and a Second Planet Detected via Transit Timing Variations
Sarah Ballard, Daniel Fabrycky, Francois Fressin +28
We present the discovery of the Kepler-19 planetary system, which we first identified from a 9.3-day periodic transit signal in the Kepler photometry. From high-resolution spectros…
A Closely-Packed System of Low-Mass, Low-Density Planets Transiting Kepler-11
Jack J. Lissauer, Daniel C. Fabrycky, Eric B. Ford +36
When an extrasolar planet passes in front of its star (transits), its radius can be measured from the decrease in starlight and its orbital period from the time between transits. M…