561 citations · 6.8k across the 180 of their papers we have counts for
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Compact groups from the Millennium Simulations: I. Their Nature and the completeness of the Hickson sample
Eugenia Diaz-Gimenez, Gary Mamon
We identify compact groups of galaxies (CGs) within mock galaxy catalogues from the Millennium Simulation at z=0 with three semi-analytic models (SAMs) of galaxy formation. CGs are…
An optical view of the filament region of Abell 85
G. Boué, F. Durret, C. Adami +3
We compare the distribution of optically and Halpha (Ha) selected galaxies in the Southern half of the nearby Abell 85 (A85) cluster with the recently discovered X-ray filament (XR…
The nature of the nearest compact group of galaxies from precise distance measurements
Gary A. Mamon
Compact groups (CGs) of galaxies, similar to those catalogued by Hickson, appear to be the densest galaxy structures in the Universe. Redshift information is insufficient to determ…
Tidal evolution of disky dwarf galaxies in the Milky Way potential: the formation of dwarf spheroidals
Jaroslaw Klimentowski, Ewa L. Lokas, Stelios Kazantzidis +2
We conduct high-resolution collisionless N-body simulations to investigate the tidal evolution of dwarf galaxies on an eccentric orbit in the Milky Way (MW) potential. The dwarfs o…
The distribution function of dark matter in massive haloes
Radoslaw Wojtak, Ewa L. Lokas, Gary A. Mamon +3
We study the distribution function (DF) of dark matter particles in haloes of mass range 10^{14}--10^{15}\Msun. In the numerical part of this work we measure the DF for a sample of…
SDSSJ124155.33+114003.7 -- a Missing Link Between Compact Elliptical and Ultracompact Dwarf Galaxies
Igor V. Chilingarian, Gary A. Mamon
We report the discovery of a compact object (R_e = 32 pc, M_B = -12.34 mag) at a projected distance of 9 kpc from Messier 59, a giant elliptical in the Virgo cluster. Using HST ima…
Mass modelling of galaxy clusters via velocity moments
Ewa L. Lokas, Radoslaw Wojtak, Gary A. Mamon +1
We summarize the method of mass modelling of galaxy clusters based on reproducing the dispersion and kurtosis of the projected velocity distribution of galaxies. The models are par…
The galaxy luminosity function of the Abell 496 cluster and its spatial variations
G. Boué, C. Adami, F. Durret +2
We investigate the LF in the very relaxed cluster Abell 496. Our analysis is based on deep images obtained at CFHT with MegaPrime/MegaCam in four bands (ugri) covering a 1x1 deg2 r…
Suppressed radio emission in supercluster galaxies: enhanced ram pressure in merging clusters?
Jean-Christophe Mauduit, Gary A. Mamon
The environmental influence on the 1.4 GHz continuum radio emission of galaxies is analyzed in a 600 deg2 region of the local Universe containing the Shapley Supercluster (SSC). Ga…
Mass modelling of dwarf spheroidal galaxies: the effect of unbound stars from tidal tails and the Milky Way
Jaroslaw Klimentowski, Ewa L. Lokas, Stelios Kazantzidis +3
We study the origin and properties of the population of unbound stars in the kinematic samples of dwarf spheroidal galaxies. For this purpose we have run a high resolution N-body s…
The evolution of galaxy groups and of galaxies therein
Gary A. Mamon
Properties of groups of galaxies depend sensitively on the algorithm for group selection, and even the most recent catalogs of groups built from redshift-space selection should suf…
The highly obscured region around PKS1343-601 - I. Galactic interstellar extinctions using DENIS galaxy colours
A. C. Schroeder, G. A. Mamon, R. C. Kraan-Korteweg +1
The highly obscured radio-bright galaxy PKS1343-601 (l=309.7, b=+1.8) has been suspected to mark the centre of a hitherto unknown cluster in the Great Attractor region. As such it…
Interloper treatment in dynamical modelling of galaxy clusters
Radoslaw Wojtak, Ewa L. Lokas, Gary A. Mamon +3
The aim of this paper is to study the efficiency of different approaches to interloper treatment in dynamical modelling of galaxy clusters. Using cosmological N-body simulation of…
Kinematical and Dynamical Modeling of Elliptical Galaxies
G. A. Mamon, E. Lokas, A. Dekel +2
Elements of kinematical and dynamical modeling of elliptical galaxies (Es) are presented. In projection, NFW models resemble Sersic models, but with a very narrow range of shapes (…
Lost and found dark matter in elliptical galaxies
Felix Stoehr, Gary A. Mamon, Avishai Dekel +1
The kinematical properties of elliptical galaxies formed during the mergers of equal mass, stars+gas+dark matter spiral galaxies are compared to the observed low velocity dispersio…
Mass distribution in nearby Abell clusters
Ewa L. Lokas, Radoslaw Wojtak, Stefan Gottloeber +2
We study the mass distribution in six nearby (z<0.06) relaxed Abell clusters of galaxies A0262, A0496, A1060, A2199, A3158 and A3558. Given the dominance of dark matter in galaxy c…
Do the low PN velocity dispersions around elliptical galaxies imply that these lack dark matter?
Gary A. Mamon, Avishai Dekel, Felix Stoehr
While kinematical modelling of the low PN velocity dispersions observed in the outer regions of elliptical galaxies suggest a lack of dark matter around these galaxies, we report o…
The Draco dwarf in CDM and MOND
Ewa L. Lokas, Gary A. Mamon, Francisco Prada
We present interpretations of the line-of-sight velocity distribution of stars in the Draco dwarf spheroidal galaxy in terms of CDM and MOND assuming constant mass-to-light ratio a…
Velocity moments of dark matter haloes
Radoslaw Wojtak, Ewa L. Lokas, Stefan Gottloeber +1
Using cosmological N-body simulations we study the line-of-sight velocity distribution of dark matter haloes focusing on the lowest-order even moments, dispersion and kurtosis, and…
Radial velocity moments of dark matter haloes
Radoslaw Wojtak, Ewa L. Lokas, Stefan Gottloeber +1
Using cosmological N-body simulations we study the radial velocity distribution in dark matter haloes focusing on the lowest-order even moments, dispersion and kurtosis. We determi…
GALICS -- VI. Modelling Hierarchical Galaxy Formation in Clusters
B. Lanzoni, B. Guiderdoni, G. A. Mamon +2
High-resolution N-body re-simulations of 15 massive (10^{14}-10^{15} Msun) dark matter haloes have been combined with the hybrid galaxy formation model GalICS (Hatton et al. 2003),…
Lost & Found Dark Matter in Elliptical Galaxies
A. Dekel, F. Stoehr, G. A. Mamon +3
There is strong evidence that the mass in the Universe is dominated by dark matter, which exerts gravitational attraction but whose exact nature is unknown. In particular, all gala…
Dark matter distribution in the Draco dwarf from velocity moments
Ewa L. Lokas, Gary A. Mamon, Francisco Prada
We study the distribution of dark matter in the Draco dwarf spheroidal galaxy by modelling the moments of the line-of-sight velocity distribution of stars obtained from new velocit…
DENIS detections of highly obscured galaxies in the area around PKS1343-601
Anja C. Schroeder, Renee C. Kraan-Korteweg, Gary A. Mamon +1
We present results of a search for galaxies around the highly obscured giant radio galaxy PKS1343-601 using the near-infrared DENIS survey. We compare our findings with surveys in…