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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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93 papers · 1 filter
The Forming of the Cosmological Constant
Vladimir Burdyuzha, Olga Lalakulich, Yuri Ponomarev +1
The problem of the physical nature and the cosmological constant genesis is discussed. This problem can't be solved in terms of the current quantum field theory which operates with…
Mass loss from a magnetically driven wind emitted by a disk orbiting a stellar mass black hole
Frederic Daigne, Robert Mochkovitch
The source of cosmic gamma-ray bursts (hereafter GRBs) is usually believed to be a stellar mass black hole accreting material from a thick disk. The mechanism for the production of…
A Simple Method for Computing the Non-Linear Mass Correlation Function with Implications for Stable Clustering
R. R. Caldwell, Roman Juszkiewicz, Paul J. Steinhardt +1
We propose a simple and accurate method for computing analytically the mass correlation function for cold dark matter and scale-free models that fits N-body simulations over a rang…
A new measure of using the lensing dispersion in high- type Ia SNe
Takashi Hamana, Toshifumi Futamase
The gravitational lensing magnification or demagnification due to large-scale structures induces a scatter in peak magnitudes of high redshift type Ia supernovae (SNe Ia). The ampl…
Wolf-Rayet Stars in Starburst Galaxies
J. Miguel Mas-Hesse, Daniel Kunth, Miguel Cervino
Wolf-Rayet stars have been detected in a large number of galaxies experiencing intense bursts of star formation. All stars initially more massive than a certain, metallicity-depend…
Cosmic Statistics of Statistics
I. Szapudi, S. Colombi, F. Bernardeau
The errors on statistics measured in finite galaxy catalogs are exhaustively investigated. The theory of errors on factorial moments by Szapudi & Colombi (1996) is applied to cumul…
Experimental Cosmic Statistics II: Distribution
István Szapudi, Stéphane Colombi, Adrian Jenkins +1
Colombi et al. 1999 (paper I) investigated the counts-in-cells statistics and their respective errors in the CDM Virgo Hubble Volume simulation. This extremely large -body ex…
Experimental Cosmic Statistics I: Variance
Stéphane Colombi, István Szapudi, Adrian Jenkins +1
Counts-in-cells are measured in the CDM Virgo Hubble Volume simulation. This large N-body experiment has 10^9 particles in a cubic box of size 2000 h^{-1} Mpc. The unprecedented…
On the star formation history of IZw 18
F. Legrand
It has been suggested that a continuous low star formation rate has been the dominant regime in IZw 18 and in dwarf galaxies for the lifetime of these objects (Legrand et al. 1999)…
Theory of galaxy dynamics in clusters and groups
Gary A. Mamon
Analytical estimates of the mass and radial dependence of the rates of galaxy mergers and of tidal interactions are derived for clusters and groups of galaxies, taking into account…
Gravo-thermal properties and formation of elliptical galaxies
I. Marquez, G. B. Lima Neto, H. Capelato +2
We have analyzed a sample of galaxies belonging to three clusters: Coma, Abell 85, and Abell 496 (real galaxies) and a sample of simulated elliptical galaxies formed in a hierarchi…
Testing Spallation Processes With Beryllium and Boron
Brian D. Fields, Keith A. Olive, Elisabeth Vangioni-Flam +1
The nucleosynthesis of Be and B by spallation processes provides unique insight into the origin of cosmic rays. Namely, different spallation schemes predict sharply different trend…
CMB Polarization Data and Galactic Foregrounds: Estimation of Cosmological Parameters
S. Prunet, S. K. Sethi, F. R. Bouchet
We estimate the accuracy with which various cosmological parameters can be determined from the CMB temperature and polarization data when various galactic unpolarized and polarized…
Inversion of stellar statistics equation for the Galactic Bulge
M. Lopez-Corredoira, P. L. Hammersley, F. Garzon +2
A method based on Lucy (1974, AJ 79, 745) iterative algorithm is developed to invert the equation of stellar statistics for the Galactic bulge and is then applied to the K-band sta…
Why Do Black--Hole X-ray Binaries Tend to Be Transient?
Jean-Pierre Lasota
Black hole X-ray binaries are transient probably because their discs are subject to the same thermal-viscous instability which is present in dwarf nova binary systems. I discuss ap…
Chemo-spectrophotometric evolution of spiral galaxies: III. Abundance and colour gradients in discs
N. Prantzos, S. Boissier
We study the relations between luminosity and chemical abundance profiles of spiral galaxies, using detailed models for the chemical and spectro-photometric evolution of galactic d…
Tangential Large Scale Structure as a Standard Ruler: Curvature Parameters from Quasars
Boudewijn F. Roukema, Gary A. Mamon
Several observational analyses suggest that matter is spatially structured at at low redshifts. This peak in the power spectrum provides a standard ruler in…
The most metal-poor galaxies
D. Kunth, G. Ostlin
Metallicity is a key parameter that controls many aspects in the formation and evolution of stars and galaxies. In this review we focus on the metal deficient galaxies, in particul…
X-ray observations and mass determinations in the cluster of galaxies Cl0024+17
G. Soucail, N. Ota, H. Bohringer +3
We present a detailed analysis of the mass distribution in the rich and distant cluster of galaxies Cl0024+17. X-ray data come from both a deep ROSAT/HRI image of the field (Bohrin…
Starburst dwarfs - fueling and morphological evolution
Nils Bergvall, Goran Ostlin, Josefa Masegosa +1
The effects of mergers in low mass galaxies are poorly understood. In this paper we analyze different observational evidences which support the view that mergers can trigger starbu…
Properties of high-z galaxies as seen through lensing clusters
R. Pello, J-P. Kneib, J-F. Le Borgne +6
We discuss the first results obtained on the study of a sample of high-z galaxies (2 < z < 7), using the gravitational amplification effect in the core of lensing clusters. Sources…
2.4 - 197 micron spectroscopy of OH/IR stars: The IR characteristics of circumstellar dust in O-rich environments
R. J. Sylvester, F. Kemper, M. J. Barlow +4
Infrared spectra of a number of evolved O-rich stars have been obtained with the Short- and Long- Wavelength spectrometers on board the Infrared Space Observatory. The very broad w…
The X-ray Morphology of the Lensing Galaxy Cluster Cl0024+17
H. Böhringer, G. Soucail, Y. Mellier +2
The paper reports the analysis of a very deep ROSAT HRI observation of the distant lensing cluster, CL0024+17. The morphology of the cluster is studied and the small core radius in…
The Large Zenith Telescope: Redshifts and Physical Parameters of Faint Objects from a Principal Component Analysis
Remi A. Cabanac, Valerie de Lapparent
The future Large Zenith Telescope Survey will provide a catalog of spectrophotometric energy distributions (40 filters) of ~10^6 objects. In this paper, we shows that the principal…