8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR640 papers
- The University of SydneyAU475 papers
- University of BirminghamGB381 papers
- University of CopenhagenDK357 papers
- Instituto de Astrofísica de CanariasES341 papers
- Universidad de La LagunaES308 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR304 papers
- California Institute of TechnologyUS282 papers
- Center for Astrophysics Harvard & SmithsonianUS281 papers
- European Southern ObservatoryCL265 papers
- Astrophysique, Instrumentation et ModélisationFR259 papers
- Osservatorio Astronomico di PadovaIT258 papers
73 papers · 2 filters
A search for non-pulsating, chemically normal stars in the Scuti instability strip using Kepler data
Simon J. Murphy, Timothy R. Bedding, Ewa Niemczura +2
We identify stars in the Sct instability strip that do not pulsate in p modes at the 50-mag limit, using Kepler data. Spectral classification and abundance analyses from hig…
Variable stars in two open clusters within the Kepler 2-Campaign-0 field: M 35 and NGC 2158
D. Nardiello, L. R. Bedin, V. Nascimbeni +15
We present a multi-year survey aimed at collecting (1) high-precision (~5 milli-mag), (2) fast-cadence (~3 min), and (3) relatively long duration (~10 days) multi-band photometric…
Asteroseismic measurement of slow, nearly-uniform surface-to-core rotation in the main sequence F star KIC 9244992
Hideyuki Saio, Donald W. Kurtz, Masao Takata +4
We have found a rotationally split series of core g-mode triplets and surface p-mode multiplets in a main sequence F star, KIC 9244992. Comparison with models shows that the star h…
Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling
P. Moskalik, R. Smolec, K. Kolenberg +11
We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5yr. All four stars are found to be mul…
Automated determination of g-mode period spacing of red-giant stars
Abhisek Datta, Anwesh Mazumdar, Umang Gupta +1
The Kepler satellite has provided photometric timeseries data of unprecedented length, duty cycle and precision. To fully analyse these data for the tens of thousands of stars obse…
The lost sunspot cycle: New support from Be10 measurements
C. Karoff, F. Inceoglu, M. F. Knudsen +2
It has been suggested that the deficit in the number of spots on the surface of the Sun between 1790 and 1830, known as the Dalton minimum, contained an extra cycle that was not id…
The SAGA so far: reading the history of the Galaxy with asteroseismology
Luca Casagrande, Victor Silva Aguirre, Aldo M. Serenelli +3
Asteroseismology has the capability of delivering stellar properties which would otherwise be inaccessible, such as radii, masses and thus ages of stars. When this information is c…
Sodium and Oxygen Abundances in the Open Cluster NGC 6791 from APOGEE H-Band Spectroscopy
Katia Cunha, Verne V. Smith, Jennifer A. Johnson +27
The open cluster NGC 6791 is among the oldest, most massive and metal-rich open clusters in the Galaxy. High-resolution -band spectra from the Apache Point Observatory Galactic…
Echelle diagrams and period spacings of g modes in gamma Doradus stars from four years of Kepler observations
Timothy R. Bedding, Simon J. Murphy, Isabel L. Colman +1
We use photometry from the Kepler Mission to study oscillations in gamma Doradus stars. Some stars show remarkably clear sequences of g modes and we use period echelle diagrams to…
A search for binary candidates among the fundamental mode RR Lyrae stars observed by Kepler
Elisabeth Guggenberger, Jakob Steixner
Although roughly half of all stars are considered to be part of binary or multiple systems, there are only two confirmed cases of RR Lyrae pulsators with companions. One of them is…
The space photometry revolution and our understanding of RR Lyrae stars
R. Szabó, J. M. Benkő, M. Paparó +7
The study of RR Lyrae stars has recently been invigorated thanks to the long, uninterrupted, ultra-precise time series data provided by the Kepler and CoRoT space telescopes. We gi…
CNO abundances in the globular clusters NGC 1851 and NGC 6752
David Yong, Frank Grundahl, John E. Norris
We measure the C+N+O abundance sum in red giant stars in two Galactic globular clusters, NGC 1851 and NGC 6752. NGC 1851 has a split subgiant branch which could be due to different…
Asteroseismic inference on rotation, gyrochronology and planetary system dynamics of 16 Cygni
G. R. Davies, W. J. Chaplin, W. M. Farr +13
The solar analogs 16 Cyg A and 16 Cyg B are excellent asteroseismic targets in the \Kepler field of view and together with a red dwarf and a Jovian planet form an interesting syste…
Mixed modes in red giants: a window on stellar evolution
B. Mosser, O. Benomar, K. Belkacem +18
The detection of oscillations with a mixed character in subgiants and red giants allows us to probe the physical conditions in their cores. With these mixed modes, we aim at determ…
The role of turbulent pressure as a coherent pulsational driving mechanism: the case of the delta Scuti star HD 187547
V. Antoci, M. Cunha, G. Houdek +6
HD 187547 was the first candidate that led to the suggestion that solar-like oscillations are present in delta Scuti stars. Longer observations, however, show that the modes interp…
PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
S. J. Smartt, S. Valenti, M. Fraser +99
The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. We describe the data reduction str…
The G+M eclipsing binary V530 Orionis: A stringent test of magnetic stellar evolution models for low-mass stars
G. Torres, C. H. Sandberg Lacy, K. Pavlovski +4
We report extensive photometric and spectroscopic observations of the 6.1-day period, G+M-type detached double-lined eclipsing binary V530 Ori, an important new benchmark system fo…
Asteroseismic stellar activity relations
A. Bonanno, E. Corsaro, C. Karoff
In asteroseismology an important diagnostic of the evolutionary status of a star is the small frequency separation which is sensitive to the gradient of the mean molecular weight i…
The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
Marc H. Pinsonneault, Yvonne Elsworth, Courtney Epstein +42
We present the first APOKASC catalog of spectroscopic and asteroseismic properties of 1916 red giants observed in the Kepler fields. The spectroscopic parameters provided from the…
Improvements to stellar structure models, based on a grid of 3D convection simulations. II. Calibrating the mixing-length formulation
Regner Trampedach, Robert F. Stein, Jørgen Christensen-Dalsgaard +2
We perform a calibration of the mixing length of convection in stellar structure models against realistic 3D radiation-coupled hydrodynamics (RHD) simulations of convection in stel…
Bayesian distances and extinctions for giants observed by Kepler and APOGEE
Thaíse S. Rodrigues, Léo Girardi, Andrea Miglio +30
We present a first determination of distances and extinctions for individual stars in the first release of the APOKASC catalogue, built from the joint efforts of the Apache Point O…
On the asymptotic acoustic-mode phase in red-giant stars and its dependence on evolutionary state
J. Christensen-Dalsgaard, V. Silva Aguirre, Y. Elsworth +1
Asteroseismic investigations based on the wealth of data now available,in particular from the CoRoT and Kepler missions, require a good understanding of the relation between the ob…
Spectroscopic Study of the Open Cluster NGC 6811
Joanna Molenda-Zakowicz, Karsten Brogaard, Ewa Niemczura +4
The NASA space telescope Kepler has provided unprecedented time-series observations which have revolutionised the field of asteroseismology, i.e. the use of stellar oscillations to…
Super-Nyquist asteroseismology of solar-like oscillators with Kepler and K2 - expanding the asteroseismic cohort at the base of the red-giant branch
W. J. Chaplin, Y. Elsworth, G. R. Davies +4
We consider the prospects for detecting solar-like oscillations in the "super-Nyquist" regime of long-cadence (LC) Kepler photometry, i.e., above the associated Nyquist frequency o…