10.6k 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 ScientifiqueFR3.4k papers
- Université Grenoble AlpesFR2.3k papers
- Université Joseph FourierFR1.2k papers
- Observatoire de ParisFR928 papers
- European Southern ObservatoryCL889 papers
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- Max Planck Institute for AstronomyDE679 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR623 papers
- Université Paris CitéFR596 papers
- California Institute of TechnologyUS588 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR578 papers
- University of GenevaCH577 papers
52 papers · 2 filters
Detection of warm water vapour in Taurus protoplanetary discs by Herschel
P. Riviere-Marichalar, F. Ménard, W. F. Thi +12
Line spectra of 68 Taurus T Tauri stars were obtained with the Herschel-PACS (Photodetector Array Camera & Spectrometer) instrument as part of the GASPS (Gas Evolution in Protoplan…
Molecule survival in magnetized protostellar disk winds. I. Chemical model and first results
D. Panoglou, S. Cabrit, G. Pineau des Forets +3
Molecular counterparts to atomic jets have been detected within 1000 AU of young stars. Reproducing them is a challenge for proposed ejection models. We explore whether molecules m…
High resolution imaging of young M-type stars of the solar neighborhood: Probing the existence of companions down to the mass of Jupiter
P. Delorme, A. M. Lagrange, G. Chauvin +5
Context. High contrast imaging is a powerful technique to search for gas giant planets and brown dwarfs orbiting at separation larger than several AU. Around solar-type stars, gian…
First spectro-interferometric survey of Be stars I. Observations and constraints on the disks geometry and kinematics
Anthony Meilland, Florentin Millour, Samer Kanaan +5
Context. Classical Be stars are hot non-supergiant stars surrounded by a gaseous circumstellar disk that is responsible for the observed infrared-excess and emission lines. The phe…
An incisive look at the symbiotic star SS Leporis -- Milli-arcsecond imaging with PIONIER/VLTI
N. Blind, H. M. J. Boffin, J. -P. Berger +4
Context. Determining the mass transfer in a close binary system is of prime importance for understanding its evolution. SS Leporis, a symbiotic star showing the Algol paradox and p…
A Surprising Dynamical Mass for V773~Tau~B
A. Boden, G. Torres, G. Duchene +4
We report on new high-resolution imaging and spectroscopy on the multiple T Tauri star system V773 Tau over the 2003 -- 2009 period. With these data we derive relative astrometry,…
Spatially resolving the outer atmosphere of the M giant BK Vir in the CO first overtone lines with VLTI/AMBER
K. Ohnaka, K. -H. Hofmann, D. Schertl +5
The mass-loss mechanism in normal K--M giant stars with small variability amplitudes is not yet understood, although they are the majority among red giant stars. We present high-sp…
Metallicity of M dwarfs II. A comparative study of photometric metallicity scales
V. Neves, X. Bonfils, N. C. Santos +6
Stellar parameters are not easily derived from M dwarf spectra, which are dominated by complex bands of diatomic and triatomic molecules and not well described at the line by line…
Gas modelling in the disc of HD 163296
I. Tilling, P. Woitke, G. Meeus +19
We present detailed model fits to observations of the disc around the Herbig Ae star HD 163296. This well-studied object has an age of ~ 4 Myr, with evidence of a circumstellar dis…
First visual orbit for the prototypical colliding-wind binary WR 140
J. D. Monnier, Ming Zhao, E. Pedretti +14
Wolf-Rayet stars represent one of the final stages of massive stellar evolution. Relatively little is known about this short-lived phase and we currently lack reliable mass, distan…
The Late Stages of Protoplanetary Disk Evolution: A Millimeter Survey of Upper Scorpius
Geoffrey S. Mathews, Jonathan P. Williams, Francois Ménard +3
We present deep 1.2 millimeter photometry of 37 stars in the young (5 Myr) Upper Scorpius OB association, sensitive to ~4 x 10^-3 Mjup of cool millimeter dust. Disks around four lo…
MESS (Multi-purpose Exoplanet Simulation System): A Monte Carlo tool for the statistical analysis and prediction of exoplanets search results
M. Bonavita, G. Chauvin, S. Desidera +5
The high number of planet discoveries made in the last years provides a good sample for statistical analysis, leading to some clues on the distributions of planet parameters, like…
Herschel discovery of a new class of cold, faint debris discs
C. Eiroa, J. P. Marshall, A. Mora +25
We present Herschel PACS 100 and 160 micron observations of the solar-type stars alpha Men, HD 88230 and HD 210277, which form part of the FGK stars sample of the Herschel Open Tim…
The diameter of the CoRoT target HD 49933. Combining the 3D limb darkening, asteroseismology, and interferometry
L. Bigot, D. Mourard, P. Berio +21
Context. The interpretation of stellar pulsations in terms of internal structure depends on the knowledge of the fundamental stellar parameters. Long-base interferometers permit us…
The non-thermal radio emitter HD 93250 resolved by long baseline interferometry
H. Sana, J. -B. Le Bouquin, M. De Becker +3
As the brightest O-type X-ray source in the Carina nebula, HD 93250 (O4 III(fc)) is X-ray overluminous for its spectral type and has an unusually hard X-ray spectrum. Two different…
CID: Chemistry in disks VI.sulfur-bearing molecules in the protoplanetary disks surrounding LkCa15, MWC480, DM Tau, and GO Tau
Anne Dutrey, Valentine Wakelam, Yann Boehler +9
We study the content in S-bearing molecules of protoplanetary disks around low-mass stars. We used the new IRAM 30-m receiver EMIR to perform simultaneous observations of the $1_{1…
Chromosphere of K giant stars Geometrical extent and spatial structure detection
P. Berio, T. Merle, F. Thevenin +19
We aim to constrain the geometrical extent of the chromosphere of non-binary K giant stars and detect any spatial structures in the chromosphere. We performed observations with the…
The 2011 outburst of the recurrent novaT Pyx. Evidence for a face-on bipolar ejection
Olivier Chesneau, A. Meilland, D. P. K. Banerjee +19
We report on near-IR interferometric observations of the outburst of the recurrent nova T Pyx. We obtained near-IR observations of T Pyx at dates ranging from t=2.37d to t=48.2d af…
Young Stellar Objects in NGC 6823
B. Riaz, E. L. Martin, R. Tata +3
NGC 6823 is a young open cluster that lies at a distance of ~2 kpc in the Vulpecula OB1 association. Previous studies using CCD photometry and spectroscopy have identified a Trapez…
GSC 07396-00759 = V4046 Sgr C[D]: a Wide-separation Companion to the Close T Tauri Binary System V4046 Sgr AB
J. H. Kastner, G. G. Sacco, R. Montez +13
We explore the possibility that GSC 07396-00759 (spectral type M1e) is a widely separated (~2.82', or projected separation ~12,350 AU) companion to the "old" (age ~12 Myr) classica…
The close classical T Tauri binary V4046 Sgr: Complex magnetic fields & distributed mass accretion
J. F. Donati, S. G. Gregory, T. Montmerle +12
We report here the first results of a multi-wavelength campaign focussing on magnetospheric accretion processes within the close binary system V4046 Sgr, hosting two partly-convect…
Periodic magnetorotational dynamo action as a prototype of nonlinear magnetic field generation in shear flows
J. Herault, F. Rincon, C. Cossu +3
The nature of dynamo action in shear flows prone to magnetohydrodynamic instabilities is investigated using the magnetorotational dynamo in Keplerian shear flow as a prototype prob…
Long-term magnetic activity of a sample of M-dwarf stars from the HARPS program I. Comparison of activity indices
J. Gomes da Silva, N. C. Santos, X. Bonfils +3
Aims. Other stars are known to have magnetic cycles similar to that of the Sun. The relationship between these activity variations and the observed radial-velocity is still not sat…
POISSON project - I - Emission lines as accretion tracers in young stellar objects: results from observations of Chamaeleon I and II sources
S. Antoniucci, R. Garcia Lopez, B. Nisini +8
We present the results of the analysis of LR optical-NIR spectra (0.6-2.4 um) of a sample 47 YSOs in the ChaI and II star-forming clouds. These data are part of the POISSON project…