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20 papers
Kepler sheds new and unprecedented light on the variability of a blue supergiant: gravity waves in the O9.5Iab star HD 188209
C. Aerts, S. Simon-Diaz, S. Bloemen +12
Stellar evolution models are most uncertain for evolved massive stars. Asteroseismology based on high-precision uninterrupted space photometry has become a new way to test the outc…
Detection of Solar-Like Oscillations, Observational Constraints, and Stellar Models for Cyg, the Brightest Star Observed by the {\it Kepler} Mission
J. A. Guzik, G. Houdek, W. J. Chaplin +52
Cygni is an F3 spectral-type main-sequence star with visual magnitude V=4.48. This star was the brightest star observed by the original Kepler spacecraft mission. Short-cadence…
M-Dwarf Fast Rotators and the Detection of Relatively Young Multiple M-Star Systems
S. Rappaport, J. Swift, A. Levine +9
We have searched the Kepler light curves of ~3900 M-star targets for evidence of periodicities that indicate, by means of the effects of starspots, rapid stellar rotation. Several…
Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets
Geoffrey W. Marcy, Howard Isaacson, Andrew W. Howard +100
We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7…
Kepler observations of the eclipsing cataclysmic variable KIS J192748.53+444724.5
S. Scaringi, P. J. Groot, M. Still
We present results from long cadence Kepler observations covering 97.6 days of the newly discovered eclipsing cataclysmic variable KIS J192748.53+444724.5/KIC 8625249. We detect de…
Short duration high amplitude flares detected on the M dwarf star KIC 5474065
Gavin Ramsay, J. Gerry Doyle, Pasi Hakala +4
Using data obtained during the RATS-Kepler project we identified one short duration flare in a 1 hour sequence of ground based photometry of the dwarf star KIC 5474065. Observation…
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…
Broad-band timing properties of the accreting white dwarf MV Lyrae
S. Scaringi, E. Koerding, P. Uttley +4
We present a broad-band timing analysis of the accreting white dwarf system MV Lyrae based on data obtained with the Kepler satellite. The observations span 633 days at a cadence o…
Demystifying Kepler Data: A Primer for Systematic Artifact Mitigation
K. Kinemuchi, T. Barclay, M. Fanelli +3
The Kepler spacecraft has collected data of high photometric precision and cadence almost continuously since operations began on 2009 May 2. Primarily designed to detect planetary…
Detection of gravity modes in the massive binary V380 Cyg from Kepler spacebased photometry and high-resolution spectroscopy
A. Tkachenko, C. Aerts, K. Pavlovski +17
We report the discovery of low-amplitude gravity-mode oscillations in the massive binary star V380 Cyg, from 180 d of Kepler custom-aperture space photometry and 5 months of high-r…
Evolutionary influences on the structure of red-giant acoustic oscillation spectra from 600d of Kepler observations
T. Kallinger, S. Hekker, B. Mosser +12
Context: The Kepler space mission is reaching continuous observing times long enough to start studying the fine structure of the observed p-mode spectra. Aims: In this paper, we ai…
HD 181068: A Red Giant in a Triply-Eclipsing Compact Hierarchical Triple System
A. Derekas, L. L. Kiss, T. Borkovits +41
Hierarchical triple systems comprise a close binary and a more distant component. They are important for testing theories of star formation and of stellar evolution in the presence…
Initial data release of the Kepler-INT Survey
S. Greiss, D. Steeghs, B. T. Gänsicke +19
This paper describes the first data release of the Kepler-INT Survey (KIS), that covers a 116 deg2 region of the Cygnus and Lyra constellations. The Kepler field is the target of t…
The Dust Extinction Curves of Gamma-Ray Burst Host Galaxies
P. Schady, T. Dwelly, M. J. Page +8
The composition and amount of interstellar dust within gamma-ray burst (GRB) host galaxies is of key importance when addressing selection effects in the GRB redshift distribution,…
Observational Constraints, Stellar Models, and Kepler Data for theta Cyg, the Brightest Star Observable by Kepler
J. A. Guzik, G. Houdek, W. J. Chaplin +8
The V=4.48 F4 main-sequence star theta Cyg is the brightest star observable in the Kepler spacecraft field-of-view. Short-cadence (58.8 s) photometric data were obtained by Kepler…
Asteroseismic inferences on red giants in open clusters NGC 6791, NGC 6819 and NGC 6811 using Kepler
S. Hekker, S. Basu, D. Stello +17
Context: Four open clusters are present in the Kepler field of view and timeseries of nearly a year in length are now available. These timeseries allow us to derive asteroseismic g…
Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
Andrew W. Howard, Geoffrey W. Marcy, Stephen T. Bryson +59
We report the distribution of planets as a function of planet radius (R_p), orbital period (P), and stellar effective temperature (Teff) for P < 50 day orbits around GK stars. Thes…
First Kepler results on compact pulsators VII. Pulsating subdwarf B stars detected in the second half of the survey phase
A. S. Baran, S. D. Kawaler, M. D. Reed +10
We present five new pulsating subdwarf B (sdB) stars discovered by the Kepler spacecraft during the asteroseismology survey phase. We perform time-series analysis on the nearly con…
Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst
P. A. Curran, T. J. Maccarone, P. Casella +5
We present Swift broadband observations of the recently discovered black hole candidate, X-ray transient, XTE J1752-223, obtained over the period of outburst from October 2009 to J…
Flavours of variability: 29 RR Lyrae stars observed with Kepler
J. M. Benkő, K. Kolenberg, R. Szabó +18
We present our analysis of Kepler observations of 29 RR Lyrae stars, based on 138-d of observation. We report precise pulsation periods for all stars. Nine of these stars had incor…