Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR9.6k papers
- Sorbonne UniversitéFR5.6k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.8k papers
- CEA Paris-SaclayFR3.3k papers
- Université Paris-SaclayFR3k papers
- Délégation Paris 7FR2.8k papers
- Sorbonne Paris CitéFR2.5k papers
- Université Paris Sciences et LettresFR2.3k papers
- Astrophysique, Instrumentation et ModélisationFR2.2k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.1k papers
- Aix-Marseille UniversitéFR1.9k papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR1.8k papers
73 papers · 2 filters
Studying the transfer of magnetic helicity in solar active regions with the connectivity-based helicity flux density method
K. Dalmasse, E. Pariat, G. Valori +2
In the solar corona, magnetic helicity slowly and continuously accumulates in response to plasma flows tangential to the photosphere and magnetic flux emergence through it. Analyzi…
HD 156324: a tidally locked magnetic triple spectroscopic binary with a disrupted magnetosphere
M. Shultz, Th. Rivinius, G. A. Wade +3
HD 156324 is an SB3 (B2V/B5V/B5V) system in the Sco OB4 association. The He-strong primary possesses both a strong magnetic field, and H emission believed to originate in its Ce…
The close circumstellar environment of Betelgeuse - V. Rotation velocity and molecular envelope properties from ALMA
Pierre Kervella, Leen Decin, Anita M. S. Richards +6
We observed Betelgeuse using ALMA's extended configuration in band 7 (f~340 GHz, λ~0.88 mm), resulting in a very high angular resolution of 18 mas. Using a solid body rotation mode…
The influence of metallicity on stellar differential rotation and magnetic activity
Christoffer Karoff, Travis S. Metcalfe, Angela R. G. Santos +20
Observations of Sun-like stars over the last half-century have improved our understanding of how magnetic dynamos, like that responsible for the 11-year solar cycle, change with ro…
Understanding the Role of Mass-Unloading in Filament Eruptions
Jack Jenkins, David M Long, Lidia van Driel-Gesztelyi +1
We describe a partial filament eruption on 11 December 2011 which demonstrates that the inclusion of mass is an important next step for understanding solar eruptions. Observations…
Stellar Inversion Techniques
Daniel R. Reese
Stellar seismic inversions have proved to be a powerful technique for probing the internal structure of stars, and paving the way for a better understanding of the underlying physi…
Large-Amplitude Longitudinal Oscillations Triggered by the Merging of Two Solar Filaments: Observations and Magnetic Field Analysis
M. Luna, Y. Su, B. Schmieder +2
We follow the eruption of two related intermediate filaments observed in H (from GONG) and in EUV (from SDO/AIA) and the resulting large-amplitude longitudinal oscillations of t…
The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars
Aldo Serenelli, Jennifer Johnson, Daniel Huber +23
(Abridged) We present the first APOKASC catalog of spectroscopic and asteroseismic data for 415 dwarfs and subgiants. Asteroseismic data have been obtained by Kepler in short caden…
Masses of the components of SB2 binaries observed with Gaia. IV. Accurate SB2 orbits for 14 binaries, and masses of 3 binaries
F. Kiefer, J. -L. Halbwachs, Y. Lebreton +7
The orbital motion of non-contact double-lined spectroscopic binaries (SB2), with periods of a few tens of days to several years, holds unique accurate informations on individual s…
VIRAC: The VVV Infrared Astrometric Catalogue
L. C. Smith, P. W. Lucas, R. Kurtev +12
We present VIRAC version 1, a near-infrared proper motion and parallax catalogue of the VISTA VVV survey for 312,587,642 unique sources averaged across all overlapping pawprint and…
BRITE-Constellation high-precision time-dependent photometry of the early-O-type supergiant Puppis unveils the photospheric drivers of its small- and large-scale wind structures
Tahina Ramiaramanantsoa, Anthony F. J. Moffat, Robert Harmon +33
From months of dual-band optical photometric monitoring at the mmag level, BRITE-Constellation has revealed two simultaneous types of variability in the O4I(n)fp star …
Non-adiabatic pulsations in ESTER models
Daniel Roy Reese, Marc-Antoine Dupret, Michel Rieutord
One of the greatest challenges in interpreting the pulsations of rapidly rotating stars is mode identification, i.e. correctly matching theoretical modes to observed pulsation freq…
On the signatures of flare-induced global waves in the Sun: GOLF and VIRGO observations
Brajesh Kumar, Savita Mathur, Rafael A. Garcia +1
Recently, several efforts have been made to identify the seismic signatures of flares and magnetic activity in the Sun and Sun-like stars. In this work, we have analyzed the disk-i…
Cloudless atmospheres for young low-gravity substellar objects
P. Tremblin, G. Chabrier, I. Baraffe +7
Atmospheric modeling of low-gravity (VL-G) young brown dwarfs remains a challenge. The presence of very thick clouds has been suggested because of their extremely red near-infrared…
Far beyond the Sun: I. The beating magnetic heart in Horologium
Julián D. Alvarado-Gómez, Gaitee A. J. Hussain, Jeremy J. Drake +10
A former member of the Hyades cluster, Horologii ( Hor) is a planet-hosting Sun-like star which displays the shortest coronal activity cycle known to date (…
Variational estimation of the large scale time dependent meridional circulation in the Sun: proofs of concept with a solar mean field dynamo model
Ching Pui Hung, Allan Sacha Brun, Alexandre Fournier +3
We present in this work the development of a solar data assimilation method based on an axisymmetric mean field dynamo model and magnetic surface data, our mid-term goal is to pred…
Estimating the deep solar meridional circulation using magnetic observations and a dynamo model: a variational approach
Ching Pui Hung, Laurène Jouve, Allan Sacha Brun +2
We show how magnetic observations of the Sun can be used in conjunction with an axisymmetric flux-transport solar dynamo model in order to estimate the large-scale meridional circu…
Mixed poloidal-toroidal magnetic configuration and surface abundance distributions of the Bp star 36 Lyn
M. E. Oksala, J. Silvester, O. Kochukhov +3
Previous studies of the chemically peculiar Bp star 36 Lyn revealed a moderately strong magnetic field, circumstellar material, and inhomogeneous surface abundance distributions of…
The formation of the Milky Way halo and its dwarf satellites; a NLTE-1D abundance analysis. II. Early chemical enrichment
L. Mashonkina, P. Jablonka, T. Sitnova +2
We present the non-local thermodynamic equilibrium (NLTE) abundances of up to 10 chemical species in a sample of 59 very metal-poor (VMP, -4 < [Fe/H] < -2) stars in seven dwarf sph…
Observational calibration of the projection factor of Cepheids IV. Period-projection factor relation of Galactic and Magellanic Cloud Cepheids
A. Gallenne, P. Kervella, A. Mérand +4
We focus on empirically measure the p-factor of a homogeneous sample of 29 LMC and 10 SMC Cepheids for which an accurate average LMC/SMC distance were estimated from eclipsing bina…
Resolving the circumstellar environment of the Galactic B[e] supergiant star MWC 137 from large to small scales
Michaela Kraus, Tiina Liimets, Cristina E. Cappa +10
The Galactic object MWC 137 was suggested to belong to the group of B[e] supergiants. However, with its large-scale optical bipolar ring nebula and the high velocity jet and knots,…
The fate of close-in planets: tidal or magnetic migration?
A. Strugarek, E. Bolmont, S. Mathis +4
Planets in close-in orbits interact magnetically and tidally with their host stars. These interactions lead to a net torque that makes close-in planets migrate inward or outward de…
Estimation of a Coronal Mass Ejection Magnetic Field Strength using Radio Observations of Gyrosynchrotron Radiation
Eoin P. Carley, Nicole Vilmer, Paulo J. A. Simões +1
Coronal mass ejections (CMEs) are large eruptions of plasma and magnetic field from the low solar corona into interplanetary space. These eruptions are often associated with the ac…
Photospheric activity of the Sun with VIRGO and GOLF: Comparison with standard activity proxies
D. Salabert, R. A. García, A Jiménez +3
We study the variability of solar activity using new photospheric proxies originally developed for the analysis of stellar magnetism with the CoRoT and Kepler photometric observati…