activity
20092012
collaborators

10 papers

astro-ph.SR2012

Characterizing two solar-type Kepler subgiants with asteroseismology: KIC10920273 and KIC11395018

G. Dogan, T. S. Metcalfe, S. Deheuvels +27

Determining fundamental properties of stars through stellar modeling has improved substantially due to recent advances in asteroseismology. Thanks to the unprecedented data quality…

astro-ph.SR2012

A pulsation zoo in the hot subdwarf B star KIC 10139564 observed by Kepler

A. S. Baran, M. D. Reed, D. Stello +13

We present our analyses of 15 months of Kepler data on KIC 10139564. We detected 57 periodicities with a variety of properties not previously observed all together in one pulsating…

astro-ph.EP2012

Transit Timing Observations from Kepler: III. Confirmation of 4 Multiple Planet Systems by a Fourier-Domain Study of Anti-correlated Transit Timing Variations

Jason H. Steffen, Daniel C. Fabrycky, Eric B. Ford +45

We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This method involves a Fourier-Domain analysis of the devia…

astro-ph.SR2011

Oscillation mode linewidths of main-sequence and subgiant stars observed by Kepler

T. Appourchaux, O. Benomar, M. Gruberbauer +20

Solar-like oscillations have been observed by {\it Kepler} and CoRoT in several solar-type stars. We study the variations of stellar p-mode linewidth as a function of effective tem…

astro-ph.SR2011

Ensemble Asteroseismology of Solar-Type Stars with the NASA Kepler Mission

W. J. Chaplin, H. Kjeldsen, J. Christensen-Dalsgaard +56

In addition to its search for extra-solar planets, the NASA Kepler Mission provides exquisite data on stellar oscillations. We report the detections of oscillations in 500 solartyp…

astro-ph.SR2011

The excitation of solar-like oscillations in a delta Scuti star by efficient envelope convection

V. Antoci, G. Handler, T. L. Campante +21

Delta Scuti (delta Sct) stars are opacity-driven pulsators with masses of 1.5-2.5M, their pulsations resulting from the varying ionization of helium. In less massive star…