Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2k papers
- University of British ColumbiaCA1.9k papers
- McGill UniversityCA1.9k papers
- University of VictoriaCA1.8k papers
- University of California, Santa CruzUS1.7k papers
- Rutherford Appleton LaboratoryGB1.7k papers
- University of ManchesterGB1.7k papers
- Queen Mary University of LondonGB1.7k papers
- University of PisaIT1.6k papers
- University of EdinburghGB1.6k papers
- University of BirminghamGB1.6k papers
- Heidelberg UniversityDE1.6k papers
24 papers · 2 filters
An X-ray investigation of the NGC 346 field in the SMC (2) : the field population
Y. Naze, J. M. Hartwell, I. R. Stevens +5
We present results from a Chandra observation of the NGC346 cluster, which is the ionizing source of N66, the most luminous HII region and the largest star formation region in the…
Effects of Quasi-Static Aberrations in Faint Companion Searches
C. Marois, R. Doyon, D. Nadeau +2
We present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. The camera's main featu…
TRIDENT: an infrared camera optimized for the detection of methanated substellar companions around nearby stars
C. Marois, R. Doyon, D. Nadeau +3
A near-infrared (0.85-2.5 microns) camera in use at the Canada-France-Hawaii Telescope and at the 1.6m telescope of the Observatoire du Mont-Megantic is described. The camera is ba…
Searching for Faint Companions with the TRIDENT Differential Simultaneous Imaging Camera
C. Marois, D. Nadeau, R. Doyon +2
We present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. Its main feature is the…
Differential Simultaneous Imaging and Faint Companions: TRIDENT First Results from CFHT
C. Marois, D. Nadeau, R. Doyon +2
We present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. Its main feature is the…
A Critical Examination of Halo White Dwarf Candidates
P. Bergeron
A detailed analysis of halo white dwarf candidates is presented, which is based on model atmosphere fits to observed energy distributions built from photoelectric or photographic m…
Rotational mixing in low-mass stars : I Effect of the mu-gradients in main sequence and subgiant Pop I stars
Ana Palacios, Suzanne Talon, Corinne Charbonnel +1
We present a first set of results concerning stellar evolution of rotating low-mass stars. Our models include fully consistent transport of angular momentum and chemicals due to th…
Of Variability, or its Absence, in HgMn Stars
S. Turcotte, O. Richard
Current models and observations of variability in HgMn stars disagree. We present here the models that argue for pulsating HgMn stars with properties similar to those of Slowly Pul…
Around the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar II: Results for the second observing season
Wesley N. Colley, Rudolph E. Schild, Cristina Abajas +35
We report on an observing campaign in March 2001 to monitor the brightness of the later arriving Q0957+561 B image in order to compare with the previously published brightness obse…
The True Incidence of Magnetism among Field White Dwarfs
James Liebert, P. Bergeron, J. B. Holberg
We study the incidence of magnetism in white dwarfs from three large and well-observed samples of hot, cool, and nearby white dwarfs in order to test whether the fraction of magnet…
Discovery of A New Class of Pulsating Stars: Gravity-mode Pulsators among Subdwarf B Stars
E. M. Green, G. Fontaine, M. D. Reed +15
During the course of an ongoing CCD monitoring program to investigate low-level light variations in subdwarf B (sdB) stars, we have serendipitously discovered a new class of low am…
Neutral Beams from Blazar Jets
Armen M. Atoyan, Charles D. Dermer
We treat the production of neutrons, photons, and neutrinos through photomeson interactions of relativistic protons with ambient photons in the compact inner jets of blazars. We sh…
An X-ray investigation of the NGC346 field in the SMC (1) : the LBV HD5980 and the NGC346 cluster
Y. Naze, J. M. Hartwell, I. R. Stevens +5
We present results from a Chandra observation of the NGC346 cluster. This cluster contains numerous massive stars and is responsible for the ionization of N66, the most luminous HI…
Model Atmosphere Analysis of Two Very Cool White Dwarfs
P. Bergeron, S. K. Leggett
A detailed analysis of the very cool white dwarfs SDSS 1337+00 and LHS 3250 is presented. Model atmosphere calculations with improved collision-induced absorptions by molecular hyd…
Angular momentum extraction by gravity waves in the Sun
Suzanne Talon, Pawan Kumar, Jean-Paul Zahn
We review the behavior of the oscillating shear layer produced by gravity waves below the surface convection zone of the Sun. We show that, under asymmetric filtering produced by t…
BL Lac Objects in the Synchrotron Proton Blazar Model
A. Muecke, R. J. Protheroe, R. Engel +2
We calculate the spectral energy distribution (SED) of electromagnetic radiation and the spectrum of high energy neutrinos from BL Lac objects in the context of the Synchrotron Pro…
Polarimetric variations of binary stars. IV. Pre-main-sequence spectroscopic binaries located in Taurus, Auriga, and Orion
N. Manset, P. Bastien
We present polarimetric observations of 14 pre-main-sequence (PMS) binaries located in the Taurus, Auriga, and Orion star forming regions. The majority of the average observed pola…
High-Resolution X-ray Imaging of the Colliding Wind Shock in WR147
J. M. Pittard, I. R. Stevens, P. M. Williams +4
We analyze new high-resolution Chandra X-ray images of the Wolf-Rayet binary system WR147. This system contains a WN8 star with an early-type companion located 0.6'' to its north,…
Shear and Mixing in Oscillatory Doubly Diffusive Convection
Francesco Paparella, Edward A. Spiegel, Suzanne Talon
To investigate the mechanism of mixing in oscillatory doubly diffusive (ODD) convection, we truncate the horizontal modal expansion of the Boussinesq equations to obtain a simplifi…
Multiwavelength Rotation Curves to Test Dark Halo Central Shapes
Sebastien Blais-Ouellette, Claude Carignan, Philippe Amram
We use Fabry-Perot Halpha spectroscopy, complemented with published HI radio synthesis observations to derive high resolution rotation curves of spiral galaxies. We investigate pre…
Impact of UV Radiation from Giant Spirals on the Evolution of Dwarf Galaxies
S. Mashchenko, C. Carignan, A. Bouchard
We show that ultraviolet radiation, with wavelengths shorter than 2000 A, escaping from the disks of giant spirals could be one of the principal factors affecting the evolution of…
X-ray Synchrotron Spectral Hardenings from Compton and Synchrotron Losses in Extended Chandra Jets
Charles D. Dermer, Armen M. Atoyan
Chandra observations of knots and hot spots in spatially resolved X-ray jets of radio galaxies show that the X-ray fluxes often lie above an extrapolation from the radio-to-optical…
Near-Infrared Adaptive Optics Spectroscopy of Binary Brown Dwarf HD 130948B and C
M. Goto, N. Kobayashi, H. Terada +9
We present near-infrared spectroscopy of low-mass companions in a nearby triple system HD 130948 (Gliese 564, HR 5534). Adaptive optics on the Subaru Telescope allowed spectroscopy…
ATCA radio imaging of the ProPlyD-like objects in the giant HII region NGC 3603
A. Muecke, B. S. Koribalski, A. F. J. Moffat +2
Three cometary-shaped objects in the giant HII region NGC 3603, originally found and identified as proto-planetary disks (ProPlyDs) by Brandner et al. 2000 using HST+VLT in the opt…