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
78 papers · 2 filters
A New Method for the Asteroseismic Determination of the Evolutionary State of Red-Giant Stars
Yvonne Elsworth, Saskia Hekker, Sarbani Basu +1
Determining the ages of red-giant stars is a key problem in stellar astrophysics. One of the difficulties in this determination is to know the evolutionary state of the individual…
Do A-type stars flare?
M. G. Pedersen, V. Antoci, H. Korhonen +5
For flares to be generated, stars have to have a sufficiently deep outer convection zone (F5 and later), strong large--scale magnetic fields (Ap/Bp-type stars) or strong, radiative…
A Distant Mirror: Solar Oscillations Observed on Neptune by the Kepler K2 Mission
P. Gaulme, J. F. Rowe, T. R. Bedding +24
Starting in December 2014, Kepler K2 observed Neptune continuously for 49 days at a 1-minute cadence. The goals consisted of studying its atmospheric dynamics (Simon et al. 2016),…
Ages of 70 dwarfs of three populations in the solar neighborhood: considering O and C abundances in stellar models
Z. S. Ge, S. L. Bi, Y. Q. Chen +5
Oxygen and carbon are important elements in stellar populations. Their behavior refers to the formation history of the stellar populations. C and O abundances would also obviously…
Gaia's view of the Boo star puzzle
Simon J. Murphy, Ernst Paunzen
The evolutionary status of the chemically peculiar class of Boo stars has been intensely debated. It is now agreed that the Boo phenomenon affects A stars of all ages, from…
Standing on the shoulders of Dwarfs: the Kepler asteroseismic LEGACY sample II - radii, masses, and ages
Victor Silva Aguirre, Mikkel N. Lund, H. M. Antia +21
We use asteroseismic data from the Kepler satellite to determine fundamental stellar properties of the 66 main-sequence targets observed for at least one full year by the mission.…
Non-local thermodynamic equilibrium stellar spectroscopy with 1D and 3D models - II. Chemical properties of the Galactic metal-poor disc and the halo
Maria Bergemann, Remo Collet, Ralph Schoenrich +5
From exploratory studies and theoretical expectations it is known that simplifying approximations in spectroscopic analysis (LTE, 1D) lead to systematic biases of stellar parameter…
Non-local thermodynamic equilibrium stellar spectroscopy with 1D and <3D> models - I. Methods and application to magnesium abundances in standard stars
Maria Bergemann, Remo Collet, Anish M. Amarsi +3
We determine Mg abundances in 6 Gaia benchmark stars using theoretical one-dimensional (1D) hydrostatic model atmospheres, as well as temporally- and spatially-averaged 3D model at…
The K2 Galactic Archaeology Program Data Release 1: Asteroseismic results from Campaign 1
D. Stello, J. Zinn, Y. Elsworth +11
NASA's K2 mission is observing tens of thousands of stars along the ecliptic, providing data suitable for large scale asteroseismic analyses to inform galactic archaeology studies.…
On the relation between activity-related frequency shifts and the sunspot distribution over the solar cycle 23
A. R. G. Santos, M. S. Cunha, P. P. Avelino +2
The activity-related variations in the solar acoustic frequencies have been known for 30 years. However, the importance of the different contributions is still not well established…
Asteroseismic modelling of the Binary HD 176465
B. Nsamba, M. J. P. F. G. Monteiro, T. L. Campante +4
The detection and analysis of oscillations in binary star systems is critical in understanding stellar structure and evolution. This is partly because such systems have the same in…
Probing seismic solar analogues through observations with the NASA Kepler space telescope and HERMES high-resolution spectrograph
P. G. Beck, D. Salabert, R. A. García +21
Stars similar to the Sun, known as solar analogues, provide an excellent opportunity to study the preceding and following evolutionary phases of our host star. The unprecedented qu…
Probing the Deep End of the Milky Way with New Oscillating Kepler Giants
Savita Mathur, Rafael A. Garcia, Daniel Huber +5
The Kepler mission has been a success in both exoplanet search and stellar physics studies. Red giants have actually been quite a highlight in the Kepler scene. The Kepler long and…
The asteroseismic surface effect from a grid of 3D convection simulations. I. Frequency shifts from convective expansion of stellar atmospheres
Regner Trampedach, Magnus J. Aarslev, Günter Houdek +4
We analyse the effect on adiabatic stellar oscillation frequencies of replacing the near-surface layers in 1D stellar structure models with averaged 3D stellar surface convection s…
Pulsation versus metallicism in Am stars as revealed by LAMOST and WASP
B. Smalley, V. Antoci, D. L. Holdsworth +13
We present the results of a study of a large sample of A and Am stars with spectral types from LAMOST and light curves from WASP. We find that, unlike normal A stars, Sct pulsa…
Stellar magnetic activity and variability of oscillation parameters - An investigation of 24 solar-like stars observed by Kepler
René Kiefer, Ariane Schad, Guy Davies +1
Context. The Sun and solar-like stars undergo activity cycles for which the underlying mechanisms are not well understood. The oscillations of the Sun are known to vary with its ac…
The K2 M67 Study: An Evolved Blue Straggler in M67 from K2 Mission Asteroseismology
Emily Leiner, Robert Mathieu, Dennis Stello +1
Yellow straggler stars (YSSs) fall above the subgiant branch in optical color-magnitude diagrams, between the blue stragglers and the red giants. YSSs may represent a population of…
Galactic Archaeology with TESS: Prospects for Testing the Star Formation History in the Solar Neighbourhood
Alexandra Thomas, Emma Stevenson, Fabian W. R. Gittins +5
A period of quenching between the formation of the thick and thin disks of the Milky Way has been recently proposed to explain the observed age-[α/Fe] distribution of stars in the…
A simple model to describe intrinsic stellar noise for exoplanet detection around red giants
Thomas S. H. North, William J. Chaplin, Ronald L. Gilliland +7
In spite of the huge advances in exoplanet research provided by the NASA Kepler Mission, there remain only a small number of transit detections around evolved stars. Here we presen…
Improving 1D Stellar Models with 3D Atmospheres
Jakob Rørsted Mosumgaard, Victor Silva Aguirre, Achim Weiss +2
Stellar evolution codes play a major role in present-day astrophysics, yet they share common issues. In this work we seek to remedy some of those by the use of results from realist…
A new asteroseismic diagnostic for internal rotation in Doradus stars
Rhita-Maria Ouazzani, S. J. A. J. Salmon, V. Antoci +3
With four years of nearly-continuous photometry from Kepler, we are finally in a good position to apply asteroseismology to Doradus stars. In particular several analyses have d…
A thorough analysis of the short- and mid-term activity-related variations in the solar acoustic frequencies
A. R. G. Santos, M. S. Cunha, P. P. Avelino +2
The frequencies of the solar acoustic oscillations vary over the activity cycle. The variations in other activity proxies are found to be well correlated with the variations in the…
On the detectability of solar-like oscillations with the NASA TESS mission
Tiago L. Campante
The upcoming NASA TESS mission will perform an all-sky survey for planets transiting bright nearby stars. In addition, its excellent photometric precision will enable asteroseismol…
Testing stellar evolution models with the retired A star HD 185351
Jakob G. Hjørringgaard, Victor Silva Aguirre, Tim R. White +5
The physical parameters of the retired A star HD 185351 were analysed in great detail by Johnson et al. (2014) using interferometry, spectroscopy and asteroseismology. Results from…