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
34 papers · 2 filters
Iron Fluorescent Line Emission from Young Stellar Objects in the Orion Nebula
M. Tsujimoto, E. D. Feigelson, N. Grosso +5
We present the result of a systematic search for the iron Kalpha fluorescent line at 6.4 keV among 1616 X-ray sources detected by ultra-deep Chandra observations of the Orion Nebul…
Discovery of a bright X-ray transient in the Galactic Center with XMM-Newton
D. Porquet, N. Grosso, V. Burwitz +4
We report the discovery of a bright X-ray transient object, XMMU J174554.4-285456, observed in outburst with XMM-Newton on October 3, 2002,and located at 6.3' from SgrA*, the super…
Dust temperature and density profiles of AGB and post-AGB stars from mid-infrared observations
Eric Lagadec, Djamel Mekarnia, Jose Antonio De Freitas Pacheco +1
First mid-infrared images of a sample of AGB and post-AGB carbon stars (V Hya, IRC +10216, CIT 6 and Roberts 22) obtained at La Silla Observatory (ESO, Chile) are reported. CIT 6 p…
H.E.S.S. Observations of PKS 2155-304
The H. E. S. S. Collaboration, :, F. Aharonian
The high-frequency peaked BL Lac PKS 2155-304 at redshift z=0.117 has been detected with high significance (~45 sigma) at energies greater than 160 GeV, using the H.E.S.S. stereosc…
High-energy particle acceleration in the shell of a supernova remnant
H. E. S. S. Collaboration, :, F. Aharonian
A significant fraction of the energy density of the interstellar medium is in the form of high-energy charged particles (cosmic rays). The origin of these particles remains uncerta…
HDO abundance in the envelope of the solar-type protostar IRAS16293-2422
B. Parise, E. Caux, A. Castets +12
We present IRAM 30m and JCMT observations of HDO lines towards the solar-type protostar IRAS 16293-2422. Five HDO transitions have been detected on-source, and two were unfruitfull…
A possible third component in the L dwarf binary system DENIS-P J020529.0-115925 discovered with the Hubble Space Telescope
H. Bouy, E. L. Martin, W. Brandner +1
We present results showing that the multiple system DENIS-P J020529.0-115925 is likely to be a triple system of brown dwarfs. The secondary of this previously known binary system s…
Chandra Orion Ultradeep Project: Observations and Source Lists
K. V. Getman, E. Flaccomio, P. S. Broos +21
We present a description of the data reduction methods and the derived catalog of more than 1600 X-ray point sources from the exceptionally deep January 2003 Chandra X-ray Observat…
The 0.03-10Mo mass function of young open clusters
J. Bouvier, E. Moraux, J. R. Stauffer
We report the present day mass functions (PDMFs) of 3 young open clusters over a mass range from 30 Jupiter masses to 10~\msunn. The PDMFs of the 3 clusters are remarkably similar,…
A Giant Planet Candidate near a Young Brown Dwarf
G. Chauvin, A. -M. Lagrange, C. Dumas +5
We present deep VLT/NACO infrared imaging and spectroscopic observations of the brown dwarf 2MASSWJ1207334-393254, obtained during our on-going adaptive optics survey of southern y…
The HARPS survey for southern extra-solar planets II. A 14 Earth-masses exoplanet around mu Arae
N. C. Santos, F. Bouchy, M. Mayor +13
In this letter we present the discovery of a very light planetary companion to the star mu Ara (HD160691). The planet orbits its host once every 9.5days, and induces a sinusoidal r…
An optical absorption study of the Helix Planetary Nebula: NaI and CaII lines, and a search for diffuse bands
N. Mauron, T. R. Kendall
We present the results of an optical absorption study of NGC 7293, the Helix planetary nebula (PN), designed to search for diffuse band (DIB) absorptions perhaps arising in the car…
A purely geometric distance to the binary star Atlas, a member of the Pleiades
N. Zwahlen, P. North, Y. Debernardi +4
We present radial velocity and new interferometric measurements of the double star Atlas, which permit, with the addition of published interferometric data, to precisely derive the…
An X-ray Outburst from the Rapidly Accreting Young Star That Illuminates McNeil's Nebula
J. H. Kastner, M. Richmond, N. Grosso +6
Young, low-mass stars are luminous X-ray sources whose powerful X-ray flares may exert a profound influence over the process of planet formation. The origin of such emission is unc…
TeV blazar gamma-ray emission produced by a cooling pile-up particle energy distribution function
Ludovic Sauge, Gilles Henri
We propose a time-dependent one-zone model based on a quasi-Maxwellian `pile-up' distribution in order to explain the time-averaged high energy emission of TeV blazars. The instant…
Very high energy gamma rays from the direction of Sagittarius A*
H. E. S. S. Collaboration, :, F. Aharonian
We report the detection of a point-like source of very high energy (VHE) gamma-rays coincident within 1' of Sgr A*, obtained with the H.E.S.S. array of Cherenkov telescopes. The ga…
Multiple protostellar systems. I. A deep near infrared survey of Taurus and Ophiuchus protostellar objects
G. Duchene, J. Bouvier, S. Bontemps +2
(Abridged) We performed a deep infrared imaging survey of 63 embedded young stellar objects (YSOs) located in the Taurus and Ophiuchus clouds to search for companions. The sample i…
The vertical structure of T Tauri accretion disks II. Physical conditions in the disk
Fabien Malbet, Regis Lachaume, Jean-Louis Monin
We present a self-consistent analytical model for the computation of the physical conditions in a steady quasi-Keplerian accretion disk. The method, based on the thin disk approxim…
The X-ray emission from Young Stellar Objects in the rho Ophiuchi cloud core as seen by XMM-Newton
H. Ozawa, N. Grosso, T. Montmerle
We observed the main core F of the rho Ophiuchi cloud, an active star-forming region located at ~140 pc, using XMM-Newton with an exposure of 33 ks. We detect 87 X-ray sources with…
On the alignment of classical T Tauri stars with the magnetic field in the Taurus-Auriga molecular cloud
Francois Menard, Gaspard Duchene
In this paper we readdress the issue of the alignment of Classical T Tauri stars with the magnetic field in the Taurus-Auriga molecular cloud. Previous studies have claimed that th…
First determination of the dynamical mass of a binary L dwarf
H. Bouy, G. Duchene, R. Koehler +11
We present here the results of astrometric, photometric and spectroscopic observations leading to the determination of the orbit and dynamical masses of the binary L dwarf 2MASSW J…
X-ray Detections of Two Young Bona-Fide Brown Dwarfs
H. Bouy
I report here the detection of two bona-fide brown dwarfs by XMM-Newton: [GY92] 141 in the rho-Ophiuchus star forming region and DENIS-P J155601-233809 in the Upper Scorpius OB ass…
High Energy Emission and Cosmic Rays from Gamma-Ray Bursts
Denis Gialis, Guy Pelletier
The paper is devoted to the analysis of particle acceleration in Gamma-Ray Bursts and its radiative consequences. Therefore we get on one hand constraints on the physics and on the…
Black Hole Induced Ejections
G. Pelletier
Black Holes generate a particular kind of environments dominated by an accretion flow which concentrates a magnetic field. The interplay of gravity and magnetism creates this parad…