407 citations · 4k across the 31 of their papers we have counts for
32 papers
The Stellar Observations Network Group (SONG) -- A Legacy Archive of Stellar Time-Domain Spectroscopy
M. N. Lund, F. Grundahl, M. S. Fredslund +41
The Stellar Observations Network Group (SONG) network has operated for more than a decade, providing long-baseline, high-cadence spectroscopic observations of bright stars and the…
Kepler Observations of the Asteroseismic Binary HD 176465
T. R. White, O. Benomar, V. Silva Aguirre +31
Binary star systems are important for understanding stellar structure and evolution, and are especially useful when oscillations can be detected and analysed with asteroseismology.…
Giant star seismology
S. Hekker, J. Christensen-Dalsgaard
The internal properties of stars in the red-giant phase undergo significant changes on relatively short timescales. Long near-uninterrupted high-precision photometric timeseries ob…
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…
Testing the asymptotic relation for period spacings from mixed modes of red giants observed with the Kepler mission
B. Buysschaert, P. G. Beck, E. Corsaro +7
Dipole mixed pulsation modes of consecutive radial order have been detected for thousands of low-mass red-giant stars with the NASA space telescope Kepler. Such modes have the pote…
Spin-orbit alignment of exoplanet systems: ensemble analysis using asteroseismology
T. L. Campante, M. N. Lund, J. S. Kuszlewicz +23
The angle between a planet's orbital axis and the spin axis of its parent star is an important diagnostic of planet formation, migration, and tidal evolution. We seek empirical…
Internal rotation of the red-giant star KIC 4448777 by means of asteroseismic inversion
M . P. Di Mauro, R. Ventura, D. Cardini +13
In this paper we study the dynamics of the stellar interior of the early red-giant star KIC 4448777 by asteroseismic inversion of 14 splittings of the dipole mixed modes obtained f…
Asteroseismology of solar-type stars with K2
W. J. Chaplin, M. N. Lund, R. Handberg +44
We present the first detections by the NASA K2 Mission of oscillations in solar-type stars, using short-cadence data collected during K2 Campaign\,1 (C1). We understand the asteros…
Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
V. Silva Aguirre, G. R. Davies, S. Basu +21
We present a study of 33 {\it Kepler} planet-candidate host stars for which asteroseismic observations have sufficiently high signal-to-noise ratio to allow extraction of individua…
An ancient extrasolar system with five sub-Earth-size planets
T. L. Campante, T. Barclay, J. J. Swift +38
The chemical composition of stars hosting small exoplanets (with radii less than four Earth radii) appears to be more diverse than that of gas-giant hosts, which tend to be metal-r…
Limits on surface gravities of Kepler planet-candidate host stars from non-detection of solar-like oscillations
T. L. Campante, W. J. Chaplin, M. N. Lund +20
We present a novel method for estimating lower-limit surface gravities log g of Kepler targets whose data do not allow the detection of solar-like oscillations. The method is teste…
Measurement of acoustic glitches in solar-type stars from oscillation frequencies observed by Kepler
A. Mazumdar, M. J. P. F. G. Monteiro, J. Ballot +15
For the very best and brightest asteroseismic solar-type targets observed by Kepler, the frequency precision is sufficient to determine the acoustic depths of the surface convectiv…
Benefits of multiple sites for asteroseismic detections
T. Arentoft, B. Tingley, J. Christensen-Dalsgaard +3
While Kepler has pushed the science of asteroseismology to limits unimaginable a decade ago, the need for asteroseismic studies of individual objects remains. This is primarily due…
Sounding stellar cycles with Kepler - II. Ground-based observations
C. Karoff, T. S. Metcalfe, W. J. Chaplin +11
We have monitored 20 Sun-like stars in the Kepler field-of-view for excess flux with the FIES spectrograph on the Nordic Optical Telescope since the launch of Kepler spacecraft in…
Asteroseismic determination of obliquities of the exoplanet systems Kepler-50 and Kepler-65
W. J. Chaplin, R. Sanchis-Ojeda, T. L. Campante +26
Results on the obliquity of exoplanet host stars -- the angle between the stellar spin axis and the planetary orbital axis -- provide important diagnostic information for theories…
Red Giant Oscillations: Stellar Models and Mode Frequency Calculations
A. Jendreieck, A. Weiss, V. Silva Aguirre +5
We present preliminary results on modelling KIC 7693833, the so far most metal-poor red-giant star observed by {\it Kepler}. From time series spanning several months, global oscill…
Verifying asteroseismically determined parameters of Kepler stars using hipparcos parallaxes: self-consistent stellar properties and distances
V. Silva Aguirre, L. Casagrande, S. Basu +24
Accurately determining the properties of stars is of prime importance for characterizing stellar populations in our Galaxy. The field of asteroseismology has been thought to be par…
A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler
S. Mathur, T. S. Metcalfe, M. Woitaszek +39
Asteroseismology with the Kepler space telescope is providing not only an improved characterization of exoplanets and their host stars, but also a new window on stellar structure a…
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…
Seismic analysis of four solar-like stars observed during more than eight months by Kepler
S. Mathur, T. L. Campante, R. Handberg +41
Having started science operations in May 2009, the Kepler photometer has been able to provide exquisite data of solar-like stars. Five out of the 42 stars observed continuously dur…
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…
Testing Scaling Relations for Solar-Like Oscillations from the Main Sequence to Red Giants using Kepler Data
D. Huber, T. R. Bedding, D. Stello +29
We have analyzed solar-like oscillations in ~1700 stars observed by the Kepler Mission, spanning from the main-sequence to the red clump. Using evolutionary models, we test asteros…
Verification of the Kepler Input Catalog from Asteroseismology of Solar-type Stars
G. A. Verner, W. J. Chaplin, S. Basu +25
We calculate precise stellar radii and surface gravities from the asteroseismic analysis of over 500 solar-type pulsating stars observed by the Kepler space telescope. These physic…
Fourier analysis of non-Blazhko ab-type RR Lyrae stars observed with the Kepler space telescope
J. M. Nemec, R. Smolec, J. M. Benko +22
Nineteen of the ~40 RR Lyr stars in the Kepler field have been identified as candidate non-Blazhko (or unmodulated) stars. In this paper we present the results of Fourier decomposi…