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
94 papers · 2 filters
Seismic performance
B. Mosser, E. Michel, R. Samadi +4
Asteroseismology is a unique tool that can be used to study the interior of stars and hence deliver unique information for the studiy of stellar physics, stellar evolution, and Gal…
Systematic Differences in Spectroscopic Analysis of Red Giants
Ditte Slumstrup, Frank Grundahl, Victor Silva Aguirre +1
A spectroscopic analysis of stellar spectra can be carried out using different approaches; different methods, line lists, atomic parameters, solar abundances etc. The resulting atm…
Systematic investigation of chemical abundances derived using IR spectra obtained with GIANO
E. Caffau, P. Bonifacio, E. Oliva +10
Detailed chemical abundances of Galactic stars are needed in order to improve our knowledge of the formation and evolution of our galaxy, the Milky Way. We took advantage of the GI…
Helium abundance in a sample of cool stars: measurements from asteroseismology
Kuldeep Verma, Keyuri Raodeo, Sarbani Basu +5
The structural stratification of a solar-type main sequence star primarily depends on its mass and chemical composition. The surface heavy element abundances of the solar-type star…
The behaviour of galactic cosmic ray intensity during solar activity cycle 24
Eddie Ross, William J. Chaplin
We have studied long-term variations of galactic cosmic ray (GCR) intensity in relation to the sunspot number (SSN) during the most recent solar cycles. This study analyses the tim…
Stellar ages, masses and radii from asteroseismic modeling are robust to systematic errors in spectroscopy
Earl P. Bellinger, Saskia Hekker, George C. Angelou +2
The search for twins of the Sun and Earth relies on accurate characterization of stellar and exoplanetary parameters: i.e., ages, masses, and radii. In the modern era of asteroseis…
Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the 2 Observations
W. Li, X. Wang, J. Vinkó +160
Supernova (SN) 2018oh (ASASSN-18bt) is the first spectroscopically-confirmed type Ia supernova (SN Ia) observed in the field. The data revealed an excess emission…
On the photometric detection of Internal Gravity Waves in upper main-sequence stars I. Methodology and application to CoRoT targets
D. M. Bowman, C. Aerts, C. Johnston +8
Context. Main sequence stars with a convective core are predicted to stochastically excite Internal Gravity Waves (IGWs), which effectively transport angular momentum throughout th…
Three-Dimensional Simulations of Neutrino-Driven Core-Collapse Supernovae from Low-Mass Single and Binary Star Progenitors
B. Müller, T. M. Tauris, A. Heger +6
We present a suite of seven 3D supernova simulations of non-rotating low-mass progenitors using multi-group neutrino transport. Our simulations cover single star progenitors with z…
The asteroseismic potential of CHEOPS
A. Moya, S. Barceló Forteza, A. Bonfanti +3
Asteroseismology has been impressively boosted during the last decade mainly thanks to space missions such as Kepler/K2 and CoRoT. This has a large impact, in particular, in exopla…
Asteroseismic modelling of the subgiant μ Herculis using SONG data: lifting the degeneracy between age and model input parameters
Tanda Li, Timothy R. Bedding, Hans Kjeldsen +3
We model the oscillations of the SONG target Herculis to estimate the parameters of the star. The = 1 mixed modes of Her provide strong constraints on stellar proper…
Transition from spot to faculae domination -- An alternate explanation for the dearth of intermediate \textit{Kepler} rotation periods
T. Reinhold, K. J. Bell, J. Kuszlewicz +2
The study of stellar activity cycles is crucial to understand the underlying dynamo and how it causes activity signatures such as dark spots and bright faculae. We study the appear…
Butterfly diagram of a Sun-like star observed using asteroseismology
M. Bazot, M. B. Nielsen, D. Mary +6
Stellar magnetic fields are poorly understood but are known to be important for stellar evolution and exoplanet habitability. They drive stellar activity, which is the main observa…
Time-series analyses of Cepheid and RR Lyrae variables in the wide-field variability surveys
A. Bhardwaj, S. M. Kanbur, M. Marconi +5
We discuss time-series analyses of classical Cepheid and RR Lyrae variables in the Galaxy and the Magellanic Clouds at multiple wavelengths. We adopt the Fourier decomposition meth…
High-precision stellar abundances of the elements - methods and applications
Poul Erik Nissen, Bengt Gustafsson
Methods to determine abundances of the elements in the atmospheres of F, G, and K stars with precisions of 0.01-0.03 dex are reviewed. Such high-precision stellar abundances have l…
KIC 2568888: To be or not to be a binary
N. Themeßl, S. Hekker, A. Mints +4
In cases where both components of a binary system show oscillations, asteroseismology has been proposed as a method to identify the system. For KIC 2568888, observed with ,…
Period spacings of Doradus pulsators in the Kepler field: detection methods and application to 22 slow rotators
Gang Li, Timothy R. Bedding, Simon J. Murphy +3
In Doradus stars, the g-mode period spacing shows an approximately linear relation with period. The slope is a new asteroseismic diagnostic, related to the rotation rate and th…
Coefficients of variation for detecting solar-like oscillations
Keaton J. Bell, Saskia Hekker, James S. Kuszlewicz
Detecting the presence and characteristic scale of a signal is a common problem in data analysis. We develop a fast statistical test of the null hypothesis that a Fourier-like powe…
Investigating the Unusual Spectroscopic Time-Evolution in SN 2012fr
C. Cain, E. Baron, M. M. Phillips +9
The type Ia supernova (SN) 2012fr displayed an unusual combination of its Si II λλ5972, 6355 features. This includes the ratio of their pseudo equivalent widths, placing it at the…
Modelling the solar twin 18 Sco
M. Bazot, O. Creevey, J. Christensen-Dalsgaard +1
Solar twins are objects of great interest in that they allow us to understand better how stellar evolution and structure are affected by variations of the stellar mass, age and che…
Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program
E. Y. Hsiao, M. M. Phillips, G. H. Marion +42
Shifting the focus of Type Ia supernova (SN Ia) cosmology to the near-infrared (NIR) is a promising way to significantly reduce the systematic errors, as the strategy minimizes our…
Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars
O. Benomar, M. Bazot, M. B. Nielsen +7
The differentially rotating outer layers of stars are thought to play a role in driving their magnetic activity, but the underlying mechanisms that generate and sustain differentia…
Asteroseismic radii of dwarfs: New accuracy constraints from Gaia DR2 parallaxes
Christian L. Sahlholdt, Victor Silva Aguirre
Precise stellar masses and radii can be determined using asteroseismology, but their accuracy must be tested against independent estimates. Using radii derived from Gaia DR2 parall…
FliPer: A global measure of power density to estimate surface gravities of main-sequence Solar-like stars and red giants
L. Bugnet, R. A. García, G. R. Davies +4
Asteroseismology provides global stellar parameters such as masses, radii or surface gravities using the mean global seismic parameters as well as the effective temperature for tho…