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
- Sorbonne UniversitéFR706 papers
- 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
51 papers · 2 filters
Observational limits on the spin-down torque of Accretion Powered Stellar Winds
C. Zanni, J. Ferreira
The rotation period of classical T Tauri stars (CTTS) represents a longstanding puzzle. While young low-mass stars show a wide range of rotation periods, many CTTS are slow rotator…
Spitzer Mid-Infrared Photometry of 500 - 750 K Brown Dwarfs
S. K. Leggett, L. Albert, E. Artigau +11
Mid-infrared data, including Spitzer warm-IRAC [3.6] and [4.5] photometry, is critical for understanding the cold population of brown dwarfs now being found, objects which have mor…
X-ray impact on the protoplanetary disks around T Tauri stars
G. Aresu, I. Kamp, R. Meijerink +3
Context: T Tauri stars have X-ray luminosities ranging from L_X = 10^28-10^32 erg/s. These luminosities are similar to UV luminosities (L_UV 10^30-10^31 erg/s) and therefore X-rays…
Non-stationary dynamo & magnetospheric accretion processes of the classical T Tauri star V2129 Oph
JF Donati, J Bouvier, FM Walter +11
We report here the first results of a multi-wavelength campaign focussing on magnetospheric accretion processes of the classical TTauri star (cTTS) V2129Oph. In this paper, we pres…
Methane band and Spitzer mid-IR imaging of L and T dwarf candidates in the Pleiades
S. L. Casewell, R. F. Jameson, M. R. Burleigh +4
We present Spitzer observations at [3.6] and [4.5] microns together with the methane short (1.58\,\mic)-methane long (1.69\,\mic) colour for 3 cool dwarfs in the Pleiades, PLZJ23,…
Dissecting the Moth: Discovery of an off-centered ring in the HD 61005 debris disk with high-resolution imaging
Esther Buenzli, Christian Thalmann, Arthur Vigan +17
The debris disk known as "The Moth" is named after its unusually asymmetric surface brightness distribution. It is located around the ~90 Myr old G8V star HD 61005 at 34.5 pc and h…
The fundamental parameters of the roAp star Equulei
K. Perraut, I. Brandão, D. Mourard +18
Physical processes working in the stellar interiors as well as the evolution of stars depend on some fundamental stellar properties, such as mass, radius, luminosity, and chemical…
SOPHIE velocimetry of Kepler transit candidates. I. Detection of the low-mass white dwarf KOI-74b
David Ehrenreich, Anne-Marie Lagrange, François Bouchy +19
The Kepler mission has detected transits and occultations of a hot compact object around an early-type star, the Kepler Object of Interest KOI 74. The mass of this transiting objec…
X-shooter, NACO, and AMBER observations of the LBV Pistol Star \footnote{Based on ESO runs 85.D-0182A, 085.D-0625AC}
Christophe Martayan, Ronny Blomme, Jean-Baptiste Le Bouquin +15
We present multi-instruments and multi-wavelengths observations of the famous LBV star Pistol Star. These observations are part of a larger program about early O stars at different…
High-angular resolution observations of the Pistol Star
Christophe Martayan, Ronny Blomme, Jean-Baptiste Le Bouquin +15
First results of near-IR adaptive optics (AO)-assisted imaging, interferometry, and spectroscopy of this Luminous Blue Variable (LBV) are presented. They suggest that the Pistol St…
An investigation of the close environment of beta Cep with the VEGA/CHARA interferometer
N. Nardetto, D. Mourard, I. Tallon-Bosc +22
High-precision interferometric measurements of pulsating stars help to characterize their close environment. In 1974, a close companion was discovered around the pulsating star bet…
Detection of a Molecular Disk Orbiting the Nearby, "Old," Classical T Tauri Star MP Mus
Joel H. Kastner, Pierry Hily-Blant, G. G. Sacco +2
We have used the Atacama Pathfinder Experiment 12 m telescope to detect circumstellar CO emission from MP Mus (K1 IVe), a nearby (D ~ 100 pc), actively accreting, ~7 Myr-old pre-ma…
Exploring the magnetic topologies of cool stars
J. Morin, J. -F. Donati, P. Petit +19
Magnetic fields of cool stars can be directly investigated through the study of the Zeeman effect on photospheric spectral lines using several approaches. With spectroscopic measur…
Direct detection of a magnetic field in the photosphere of the single M giant EK Boo: How common is magnetic activity among M giants?
R. Konstantinova-Antova, M. Auriere, C. Charbonnel +6
We study the fast rotating M5 giant EK Boo by means of spectropolarimetry to obtain direct and simultaneous measurements of both the magnetic field and activity indicators, in orde…
Deep near-infrared interferometric search for low-mass companions around beta Pictoris
Olivier Absil, Jean-Baptiste Le Bouquin, Jeremy Lebreton +6
Aims. We search for low-mass companions in the innermost region (<300 mas, i.e., 6 AU) of the beta Pic planetary system. Methods. We obtained interferometric closure phase measurem…
The Orbital Solution and Spectral Classification of the High-Mass X-Ray Binary IGR J01054-7253 in the Small Magellanic Cloud
L. J. Townsend, M. J. Coe, R. H. D. Corbet +11
We present X-ray and optical data on the Be/X-ray binary (BeXRB) pulsar IGR J01054-7253 = SXP11.5 in the Small Magellanic Cloud (SMC). Rossi X-ray Timing Explorer (RXTE) observatio…
A Spitzer c2d Legacy Survey to Identify and Characterize Disks with Inner Dust Holes
Bruno Merín, Joanna M. Brown, Isa Oliveira +17
Understanding how disks dissipate is essential to studies of planet formation. However, identifying exactly how dust and gas dissipates is complicated due to difficulty in finding…
The ultracool-field dwarf luminosity-function and space density from the Canada-France Brown Dwarf Survey
C. Reyle, P. Delorme, C. J. Willott +7
Context. Thanks to recent and ongoing large scale surveys, hundreds of brown dwarfs have been discovered in the last decade. The Canada-France Brown Dwarf Survey is a wide-field su…
The 2008 Outburst in the Young Stellar System Z CMa: The First Detection of Twin Jets
Emma Whelan, Catherine Dougados, Marshall Perrin +11
The Z CMa binary is understood to undergo both FU Orionis (FUOR) and EX Orionis (EXOR) type outbursts. While the SE component has been spectro- scopically identified as an FUOR, th…
A hot compact dust disk around a massive young stellar object
Stefan Kraus, Karl-Heinz Hofmann, Karl Menten +9
Circumstellar disks are an essential ingredient of the formation of low-mass stars. It is unclear, however, whether the accretion-disk paradigm can also account for the formation o…
Ortho-to-para ratio of interstellar heavy water
C. Vastel, C. Ceccarelli, E. Caux +65
Despite the low elemental deuterium abundance in the Galaxy, enhanced molecular D/H ratios have been found in the environments of low-mass star forming regions, and in particular t…
Magnetospheric accretion and spin-down of the prototypical classical T Tauri star AATau
JF Donati, MB Skelly, J Bouvier +12
From observations collected with the ESPaDOnS & NARVAL spectropolarimeters at CFHT and TBL, we report the detection of Zeeman signatures on the prototypical classical TTauri star A…
Chandra X-ray Detection of the Enigmatic Field Star BP Psc
Joel H. Kastner, Rodolfo Montez, David Rodriguez +5
BP Psc is a remarkable emission-line field star that is orbited by a dusty disk and drives a parsec-scale system of jets. We report the detection by the Chandra X-ray Observatory o…
Time, spatial, and spectral resolution of the Halpha line-formation region of Deneb and Rigel with the VEGA/CHARA interferometer
Olivier Chesneau, Luc Dessart, D. Mourard +22
BA-type supergiants are amongst the most optically-bright stars. They are observable in extragalactic environments, hence potential accurate distance indicators. Emission activity…