Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR5.8k papers
- Sorbonne UniversitéFR2.7k papers
- Université Pierre-et-Marie-CurieFR2.2k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.4k papers
- California Institute of TechnologyUS1.2k papers
- University of CambridgeGB1.1k papers
- Laboratoire d’Astrophysique de MarseilleFR1k papers
- University of OxfordGB1k papers
- University College LondonGB1k papers
- CEA Paris-SaclayFR992 papers
- University of GenevaCH963 papers
- Observatoire de ParisFR942 papers
16 papers · 1 filter
Unveiling hidden structures in the Coma cluster
A. Biviano, F. Durret, D. Gerbal +4
We have assembled a large data-set of 613 galaxy redshifts in the Coma cluster, the largest presently available for a cluster of galaxies. We have defined a sample of cluster membe…
Galaxies with the DENIS 2 Micron Survey: A Preliminary Report
Gary A. Mamon
The DENIS survey of the entire southern sky is beginning observations this year. It will return one million images, representing 4 Terabytes, among which nearly stars…
Structure and kinematical properties of the Galaxy at intermediate galactic latitudes
Devendra Ojha, Olivier Bienayme, Annie Robin +2
We have carried out a sample survey in UBVR photometry and proper motions in different directions in the Galaxy, as part of an investigation of galactic structure and evolution. Th…
The Dynamics of Groups and Clusters of Galaxies and Links to Cosmology
Gary A. Mamon
The links between the internal structure of galaxy groups and clusters and cosmological parameters are reviewed here. The mass density profiles of clusters, inferred from both opti…
Obscured AGB stars in the Magellanic Clouds II. Near-infrared and mid-infrared counterparts
Albert A. Zijlstra, Cecile Loup, L. B. F. M. Waters +3
We have carried out an infrared search for obscured AGB stars in the Magellanic Clouds. The survey uncovered a number of obscured AGB stars as well as some supergiants with infrare…
Observationnal constraints on the nature of the low redshift Lyman-alpha absorbers
V. Le Brun, J. Bergeron, P. Boisse
We present results from a spectroscopic and imaging survey of galaxies in the fields of quasars from the HST Quasar Absorption Line Key Project. The aim of this survey is to identi…
Evolution of the Ly forest: a consistent picture
Jan P. Mücket, Patrick Petitjean, Ronald E. Kates +1
We study the evolution with redshift of the number density of Ly clouds in a CDM model using numerical simulations including photo-ionization and cooling of the baryonic compone…
The metal line systems in HS1700+6416: Evidence for inhomogeneities
Patrick Petitjean, Ruediger Riediger, Michael Rauch
We present a high S/N ratio optical spectrum of the bright quasar HS1700+6416. These data usefully complement the UV HST data from Vogel and Reimers (1995). We analyse the metal li…
The first generation of stars: first steps towards chemical evolution of galaxies
Jean Audouze, Joseph Silk
We argue that extreme metal-poor stars show a high dispersion in metallicity, because their abundances are the outcome of very few supernova events. Abundance anomalies should appe…
Model-Independent Predictions of Big Bang Nucleosynthesis
Brian D. Fields, Keith A. Olive
We derive constraints from standard (with ) BBN arising solely from two cosmologically produced nuclides, \he4 and \li7, from which the extrapolation to primordial abundanc…
Kurtosis in Large-Scale Structure as a Constraint on Non-Gaussian Initial Conditions
Michał J. Chodorowski, François R. Bouchet
We calculate the kurtosis of a large-scale density field which has undergone weakly non-linear gravitational evolution from arbitrary non-Gaussian initial conditions. It is well kn…
ACCRETION DISCS WITH ACCRETING CORONAE IN AGN. I. SOLUTIONS IN HYDROSTATIC EQUILIBRIUM
P. T. Zycki, S. Collin-Souffrin, B. Czerny
We discuss a model for the central region of radio-quiet AGN in which coronal accretion is the source of energy for X-ray emission. We start from the Haardt & Maraschi model but su…
LYMAN-ALPHA FOREST CORRELATIONS USING NEIGHBOR COUNTS
Avery Meiksin, Francois R. Bouchet
We present a novel technique for calculating the two-point autocorrelation function of the Lyman-alpha forest based on the relation between the two-point correlation function and t…
SEARCH FOR VERY LOW MASS OBJECTS IN THE GALACTIC HALO
EROS collaboration, E. Aubourg, P. Bareyre +26
We present results from a search for gravitational microlensing of stars in the Large Magellanic Cloud by low mass objects in the Galactic Halo. The search uses the CCD light curve…
The Two--Point Correlation Function and the Size of Voids
Dalia S. Goldwirth, Luiz Nicolaci da Costa, Rien Van de Weygaert
Under the assumption of a void-filled Universe we investigate if the characteristic scale of voids can be determined from existing surveys. We use the Voronoi tessellation to creat…
THE LYMAN-ALPHA FOREST AT LOW REDSHIFT: TRACING THE DARK MATTER FILAMENTS
Patrick Petitjean, Jan P. Mücket, Ron Kates
We study the distribution of low-redshift Ly clouds in a CDM model using numerical simulations including photoionization and cooling of the baryonic component. The ionizing back…