10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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98 papers · 1 filter
Extragalactic Objects and Next Generation Interferometers
Didier Fraix-Burnet
The most obvious extragalactic targets for optical/infrared interferometers are Active Galactic Nuclei. In this document, I try to overview other topics that could be of interest t…
The role of the disk magnetization on the hysteresis behavior of X-ray binaries
P. O. Petrucci, J. Ferreira, G. Henri +1
We present a framework for understanding the dynamical and spectral properties of X-ray Binaries, where the presence of an organized large scale magnetic field plays a major role.…
The rotational evolution of young low mass stars
Jerome Bouvier
Star-disk interaction is thought to drive the angular momentum evolution of young stars. In this review, I present the latest results obtained on the rotational properties of low m…
Accretion funnels onto weakly magnetized young stars
N. Bessolaz, C. Zanni, J. Ferreira +2
Aims : We re-examine the conditions required to steadily deviate an accretion flow from a circumstellar disc into a magnetospheric funnel flow onto a slow rotating young forming st…
Dynamical evolution of the Gliese 581 planetary system
Hervé Beust, Xavier Bonfils, Xavier Delfosse +1
We address the issue of the dynamical evolution of the Gliese 581 planetary system. It is crucial when considering the planets' habitability because the secular evolution of the or…
Mid-infrared imaging of brown dwarfs in binary systems
K. Geißler, G. Chauvin, M. F. Sterzik
Context: Brown dwarfs exhibit complex atmospheric signatures, and their properties depend sensitively on effective temperature, surface gravity, and metallicity. Several physical p…
HESS VHE Gamma-Ray Sources Without Identified Counterparts
HESS Collaboration, F. Aharonian
The detection of gamma rays in the very-high-energy (VHE) energy range (100 GeV--100 TeV) provides a direct view of the parent population of ultra-relativistic particles found in a…
The radial structure of protostellar accretion disks: influence of jets
C. Combet, J. Ferreira
The radial structure of accretion disks is a fundamental issue regarding star and planet formation. Many theoretical studies, focussing on different aspects such as e.g. disk emiss…
Million-Degree Plasma Pervading the Extended Orion Nebula
M. Guedel, K. R. Briggs, T. Montmerle +3
Most stars form as members of large associations within dense, very cold (10-100 K) molecular clouds. The nearby giant molecular cloud in Orion hosts several thousand stars of ages…
Two years of INTEGRAL monitoring of GRS 1915+105 Part 1: multiwavelength coverage with INTEGRAL, RXTE, and the Ryle radio Telescope
J. Rodriguez, D. C. Hannikainen, S. E. Shaw +13
(Abridged) We report the results of monitoring observations of the Galactic microquasar GRS 1915+105 performed simultaneously with INTEGRAL and RXTE Ryle . We present the results o…
Two Years of INTEGRAL monitoring of GRS 1915+105 Part 2: X-Ray Spectro-Temporal Analysis
J. Rodriguez, S. E. Shaw, D. C. Hannikainen +14
(abridged) This is the second paper presenting the results of two years of monitoring of GRS 1915+105 with \integral and \rxte and the Ryle Telescope. We present the X-ray spectral…
Discovery of an extended debris disk around the F2V star HD 15745
Paul Kalas, Gaspard Duchene, Michael P. Fitzgerald +1
Using the Advanced Camera for Surveys aboard the Hubble Space Telescope, we have discovered dust-scattered light from the debris disk surrounding the F2V star HD 15745. The circums…
Detection of the lithium depletion boundary in the young open cluster IC 4665
S. Manzi, S. Randich, W. J. de Wit +1
The so-called lithium depletion boundary (LDB) provides a secure and independent tool for deriving the ages of young open clusters.In this context, our goal is to determine members…
Resolving the ionized wind of the post-Red Supergiant IRC +10 420 with VLTI/AMBER
W. J. de Wit, R. D. Oudmaijer, M. A. T. Groenewegen +3
The paper investigates the milli-arcsecond scale structure of the present-day mass-loss of the post-Red Supergiant IRC+10420. We use three telescopes of the VLT Interferometer in c…
De-biasing interferometric visibilities in VLTI-AMBER data of low SNR observations
G. Li Causi, S. Antoniucci, E. Tatulli
AIMS: We have found that the interferometric visibilities of VLTI-AMBER observations, extracted via the standard reduction package, are significantly biased when faint targets are…
Habitable planets around the star Gl 581?
Franck Selsis, J. F. Kasting, B. Levrard +3
Radial velocity surveys are now able to detect terrestrial planets at habitable distance from M-type stars. Recently, two planets with minimum masses below 10 Earth masses were rep…
Upper Limits from HESS AGN Observations in 2005-2007
HESS Collaboration, F. Aharonian
AIMS: Very high energy (VHE; E>100 GeV) gamma-ray studies were performed for 18 active galactic nuclei (AGN) from a variety of AGN classes. METHODS: VHE observations of a sample of…
Interacting Jets from Binary Protostars
G. C. Murphy, T. Lery, S. O'Sullivan +3
We investigate potential models that could explain why multiple proto-stellar systems predominantly show single jets. During their formation, stars most frequently produce energeti…
Large-scale horizontal flows in the solar photosphere III: Effects on filament destabilization
Th. Roudier, M. Svanda, N. Meunier +7
We study the influence of large-scale photospheric motions on the estabilization of an eruptive filament, observed on October 6, 7, and 8, 2004, as part of an international observi…
Tracing the origins of permitted emission lines in RU Lupi down to AU scales
L. Podio, P. J. V. Garcia, F. Bacciotti +4
Most of the observed emission lines and continuum excess from young accreting low mass stars (Classical T Tauri stars -- CTTSs) take place in the star-disk or inner disk region. Th…
The Monitor project: Rotation of low-mass stars in NGC 2362 -- testing the disc regulation paradigm at 5 Myr
Jonathan Irwin, Simon Hodgkin, Suzanne Aigrain +4
We report on the results of a time-series photometric survey of NGC 2362, carried out using the CTIO 4m Blanco telescope and Mosaic-II detector as part of the Monitor project. Rota…
Observations of the Sagittarius Dwarf galaxy by the H.E.S.S. experiment and search for a Dark Matter signal
HESS Collaboration, F. Aharonian
Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the H.E.S.S. array of four imaging air Cherenkov telescopes in June 2006. A total of 11 hou…
Accretion and Outflow-Related X-Rays in T Tauri Stars
M. Guedel, K. Briggs, K. Arzner +22
We report on accretion- and outflow-related X-rays from T Tauri stars, based on results from the "XMM-Newton Extended Survey of the Taurus Molecular Cloud." X-rays potentially form…
The stable magnetic field of the fullly-convective star V374 Peg
J. Morin, J. -F. Donati, T. Forveille +10
We report in this paper phase-resolved spectropolarimetric observations of the rapidly-rotating fully-convective M4 dwarf V374 Peg, on which a strong, mainly axisymmetric, large-sc…