561 citations · 6.8k across the 180 of their papers we have counts for
46 papers · 1 filter
CODEX: Role of velocity substructure in the scaling relations of galaxy clusters
S. Damsted, A. Finoguenov, N. Clerc +7
The use of galaxy clusters as cosmological probes relies on a detailed understanding of their properties. We aim to update the spectroscopic cluster identification of CODEX by runn…
MG-MAMPOSSt, a code to test gravity at galaxy-cluster scales: a technical introduction
L. Pizzuti, I. D. Saltas, A. Biviano +2
The \textsc{MG-MAMPOSSt} code is a license-free \textsc{Fortran95} code to perform tests of General Relativity (GR) through the analyses of kinematical data of galaxy clusters base…
Euclid preparation III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection
Euclid Collaboration, R. Adam, M. Vannier +56
Galaxy cluster counts in bins of mass and redshift have been shown to be a competitive probe to test cosmological models. This method requires an efficient blind detection of clust…
Galaxy Cluster Mass Reconstruction Project - IV. Understanding the effects of imperfect membership on cluster mass estimation
R. Wojtak, L. Old, G. A. Mamon +17
The primary difficulty in measuring dynamical masses of galaxy clusters from galaxy data lies in the separation between true cluster members from interloping galaxies along the lin…
Galaxy Cluster Mass Reconstruction Project: III. The impact of dynamical substructure on cluster mass estimates
L. Old, R. Wojtak, F. R. Pearce +14
With the advent of wide-field cosmological surveys, we are approaching samples of hundreds of thousands of galaxy clusters. While such large numbers will help reduce statistical un…
Group galaxy number density profiles far out: is the 'one-halo' term NFW out to virial radii?
Marina Trevisan, Gary A. Mamon, Diego H. Stalder
While the density profiles (DPs) of CDM haloes obey the NFW law out to roughly one virial radius, , the structure of their outer parts is still poorly understood, s…
MAGGIE: Models and Algorithms for Galaxy Groups, Interlopers and Environment
Manuel Duarte, Gary A. Mamon
Combining our knowledge of halo structure and internal kinematics from cosmological dark matter simulations and the distribution of halo interlopers in projected phase space measur…
Effect of primordial non-Gaussianities on the far-UV luminosity function of high-redshift galaxies: implications for cosmic reionization
Jacopo Chevallard, Joseph Silk, Takahiro Nishimichi +3
[Abridged] Understanding how the intergalactic medium (IGM) was reionized at z > 6 is one of the big challenges of current high redshift astronomy. It requires modelling the collap…
Testing primordial non-Gaussianities on galactic scales at high redshift
Mélanie Habouzit, Takahiro Nishimichi, Sébastien Peirani +3
Primordial non-Gaussianities provide an important test of inflationary models. Although the Planck CMB experiment has produced strong limits on non-Gaussianity on scales of cluster…
Deep Chandra Observations of HCG 16 - II. The Development of the Intra-group Medium in a Spiral-Rich Group
E. O'Sullivan, J. M. Vrtilek, L. P. David +6
We use a combination of deep Chandra X-ray observations and radio continuum imaging to investigate the origin and current state of the intra-group medium in the spiral-rich compact…
Galaxy Cluster Mass Reconstruction Project: I. Methods and first results on galaxy-based techniques
L. Old, R. A. Skibba, F. R. Pearce +18
This paper is the first in a series in which we perform an extensive comparison of various galaxy-based cluster mass estimation techniques that utilise the positions, velocities an…
The mass profile and dynamical status of the z~0.8 galaxy cluster LCDCS 0504
L. Guennou, A. Biviano, C. Adami +34
Constraints on the mass distribution in high-redshift clusters of galaxies are not currently very strong. We aim to constrain the mass profile, M(r), and dynamical status of the $z…
How well does the Friends-of-Friends algorithm recover group properties from galaxy catalogs limited in both distance and luminosity?
Manuel Duarte, Gary Mamon
We test the Friends-of-Friends (FoF) grouping algorithm, which depends on two linking lengths (LLs), plane-of-sky and line-of-sight (LOS), normalized to the mean nearest neighbor s…
Supernovae in paired host galaxies
T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan +5
We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different level…
Supernovae in paired galaxies
T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan +5
We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different level…
Mass, velocity anisotropy, and pseudo phase-space density profiles of Abell 2142
Emiliano Munari, Andrea Biviano, Gary Mamon
Aim: We aim to compute the mass and velocity anisotropy profiles of Abell 2142 and, from there, the pseudo phase--space density profile and the density slope - velocity anis…
Anisotropic q-Gaussian velocity distributions in LambdaCDM halos
Leandro J. Beraldo e Silva, Gary A. Mamon, Manuel Duarte +3
The velocity distribution function (VDF) of dark matter (DM) halos in CDM dissipationless cosmological simulations, which must be non-separable in its radial and tangential comp…
Galaxy Masses
S. Courteau, M. Cappellari, R. S. de Jong +8
Galaxy masses play a fundamental role in our understanding of structure formation models. This review addresses the variety and reliability of mass estimators that pertain to stars…
Dynamical signatures of infall around galaxy clusters: a generalized Jeans equation
Martina Falco, Gary A. Mamon, Radoslaw Wojtak +2
We study the internal kinematics of galaxy clusters in the region beyond the sphere of virialization. Galaxies around a virialized cluster are infalling towards the cluster centre…
Paired galaxies with different activity levels and their supernovae
T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan +5
We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different level…
On the Nature of Unconfirmed Supernovae
L. S. Aramyan, A. R. Petrosian, A. A. Hakobyan +5
We study the nature of 39 unconfirmed supernovae (SNe) from the sky area covered by the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), using available photometric and imagin…
MAMPOSSt: Modelling Anisotropy and Mass Profiles of Observed Spherical Systems. I. Gaussian 3D velocities
Gary A. Mamon, Andrea Biviano, Gwenaël Boué
Mass modelling of spherical systems through internal motions is hampered by the mass/velocity anisotropy (VA) degeneracy inherent in the Jeans equation, as well as the lack of tech…
The Planetary Nebulae Population in the Nuclear Regions of M31: the SAURON view
Nicola Pastorello, Marc Sarzi, Michele Cappellari +5
Following a first study of the central regions of M32 that illustrated the power of integral-field spectroscopy (IFS) in detecting and measuring the [O III]λ5007 emission of PNe ag…
Precision cosmology with the 2MASS clustering dipole
Maciej Bilicki, Michał Chodorowski, Wojciech Hellwing +2
Comparison of peculiar velocities of galaxies with their gravitational accelerations (induced by the density field) is one of the methods to constrain the redshift distortion param…