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
52 papers · 2 filters
Asteroseismology observations and space missions
T. Appourchaux, F. Grundahl
Contribution to a book entitled "Extraterrestrial seismology".
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…
Dive into the heart of red giant stars to better understand our Galaxy
N. Lagarde
The availability of asteroseismic constrains for of large sample of stars observed with CoRoT and Kepler paves the way for statistical studies of the seismic properties of stellar…
Comparison of photometric variability before and after stellar flares
C. Karoff
The energy in the solar acoustic spectrum is known to be correlated with flares, but it is not known if the same is true for stellar flares? In order to answer this question, we ha…
Magnetic activity of F stars observed by Kepler
S. Mathur, R. A. Garcia, J. Ballot +6
The study of stellar activity is important because it can provide new constraints for dynamo models, when combined with surface rotation rates and the depth of the convection zone.…
Study of KIC 8561221 observed by Kepler: an early red giant showing depressed dipolar modes
R. A. Garcia, F. Perez Hernandez, O. Benomar +23
The continuous high-precision photometric observations provided by the CoRoT and Kepler space missions have allowed us to better understand the structure and dynamics of red giants…
SN 2009N: Linking normal and subluminous type II-P SNe
K. Takáts, M. L. Pumo, N. Elias-Rosa +31
We present ultraviolet, optical, near-infrared photometry and spectroscopy of SN 2009N in NGC 4487. This object is a type II-P supernova with spectra resembling those of subluminou…
Stochastically excited oscillations on the upper main sequence
Victoria Antoci
Convective envelopes in stars on the main sequence are usually connected only with stars of spectral types F5 or later. However, observations as well as theory indicate that the co…
On the inference of stellar ages and convective-core properties in main-sequence solar-like pulsators
I. M. Brandão, M. S. Cunha, J. Christensen-Dalsgaard
Particular diagnostic tools may isolate the signature left on the oscillation frequencies by the presence of a small convective core. Their frequency derivative is expected to prov…
Asteroseismic fundamental properties of solar-type stars observed by the NASA Kepler Mission
W. J. Chaplin, S. Basu, D. Huber +32
We use asteroseismic data obtained by the NASA Kepler Mission to estimate the fundamental properties of more than 500 main-sequence and sub-giant stars. Data obtained during the fi…
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…
RATS-Kepler -- a deep high cadence survey of the Kepler field
Gavin Ramsay, Adam Brooks, Pasi Hakala +8
We outline the purpose, strategy and first results of a deep, high cadence, photometric survey of the Kepler field using the Isaac Newton Telescope on La Palma and the MDM 1.3m Tel…
Asteroseismic Signatures of Magnetic Activity Variations in Solar-type Stars
Travis S. Metcalfe
Observations of magnetic activity cycles in other stars provide a broader context for our understanding of the 11-year sunspot cycle. The discovery of short activity cycles in a fe…
Differential asteroseismic study of seismic twins observed by CoRoT; Comparison of HD 175272 with HD 181420
N. Ozel, B. Mosser, M. A. Dupret +12
The CoRoT short asteroseismic runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report the observation and modeli…
Stellar granulation as seen in disk-integrated intensity. II. Theoretical scaling relations compared with observations
R. Samadi, K. Belkacem, H. -G. Ludwig +9
A large set of stars observed by CoRoT and Kepler shows clear evidence for the presence of a stellar background, which is interpreted to arise from surface convection, i.e., granul…
Variability of M giant stars based on Kepler photometry: general characteristics
E. Bányai, L. L. Kiss, T. R. Bedding +15
M giants are among the longest-period pulsating stars which is why their studies were traditionally restricted to analyses of low-precision visual observations, and more recently,…
The Kepler-SEP Mission: Harvesting the South Ecliptic Pole large-amplitude variables with Kepler
R. Szabó, L. Molnár, Z. Kołaczkowski +28
As a response to the white paper call, we propose to turn Kepler to the South Ecliptic Pole (SEP) and observe thousands of large amplitude variables for years with high cadence in…
Kepler White Paper: Asteroseismology of Solar-Like Oscillators in a 2-Wheel Mission
W. J Chaplin, H. Kjeldsen, J. Christensen-Dalsgaard +53
We comment on the potential for continuing asteroseismology of solar-type and red-giant stars in a 2-wheel Kepler Mission. Our main conclusion is that by targeting stars in the ecl…
Seismic constraints on rotation of Sun-like star and mass of exoplanet
Laurent Gizon, Jérome Ballot, Eric Michel +32
Rotation is thought to drive cyclic magnetic activity in the Sun and Sun-like stars. Stellar dynamos, however, are poorly understood owing to the scarcity of observations of rotati…
Fundamental stellar properties from asteroseismology
V. Silva Aguirre, L. Casagrande, A. Miglio
Accurate characterization of stellar populations is of prime importance to correctly understand the formation and evolution process of our Galaxy. The field of asteroseismology has…
Searching for solar-like oscillations in the delta Scuti star rho Puppis
V. Antoci, G. Handler, F. Grundahl +7
Despite the shallow convective envelopes of delta Scuti pulsators, solar-like oscillations are theoretically predicted to be excited in those stars as well. To search for such stoc…
Metal Abundances, Radial Velocities and other Physical Characteristics for the RR Lyrae Stars in the Kepler Field
James M. Nemec, Judith G. Cohen, Vincenzo Ripepi +5
Spectroscopic iron-to-hydrogen ratios, radial velocities, atmospheric parameters, and new photometric analyses are presented for 41 RR Lyrae stars (and one probable high-amplitude…
The Globular Cluster NGC 6402 (M14). I. A New BV Color-Magnitude Diagram
C. Contreras Peña, M. Catelan, F. Grundahl +2
We present BV photometry of the Galactic globular cluster NGC 6402 (M14), based on 65 V frames and 67 B frames, reaching two magnitudes below the turn-off level. This represents, t…
WOCS 40007: A Detached Eclipsing Binary near the Turnoff of the Open Cluster NGC 6819
Mark W. Jeffries, Eric L. Sandquist, Robert D. Mathieu +10
We analyze extensive BVR_cI_c time-series photometry and radial-velocity measurements for WOCS 40007 (Auner 259; KIC 5113053), a double-lined detached eclipsing binary and a member…