scholarly journals Mass profiles and galaxy orbits in nearby galaxy clusters from the analysis of the projected phase space

2010 ◽  
Vol 408 (4) ◽  
pp. 2442-2456 ◽  
Author(s):  
Radosław Wojtak ◽  
Ewa L. Łokas
Keyword(s):  
Phase Space ◽  
Galaxy Clusters ◽  
Nearby Galaxy ◽  
Mass Profiles

scholarly journals Characterization of Omega-WINGS galaxy clusters

2018 ◽  
Vol 609 ◽  
pp. A133 ◽  
Author(s):  
S. Cariddi ◽  
M. D’Onofrio ◽  
G. Fasano ◽  
B. M. Poggianti ◽  
A. Moretti ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Cluster Formation ◽  
Stellar Mass ◽  
Nearby Galaxy ◽  
Observable Universe ◽  
Cluster Galaxy ◽  
Growth Profiles ◽  
First Time ◽  
Integrated Luminosity ◽  
Mass Profiles

Context. Galaxy clusters are the largest virialized structures in the observable Universe. Knowledge of their properties provides many useful astrophysical and cosmological information. Aims. Our aim is to derive the luminosity and stellar mass profiles of the nearby galaxy clusters of the Omega-WINGS survey and to study the main scaling relations valid for such systems. Methods. We merged data from the WINGS and Omega-WINGS databases, sorted the sources according to the distance from the brightest cluster galaxy (BCG), and calculated the integrated luminosity profiles in the B and V bands, taking into account extinction, photometric and spatial completeness, K correction, and background contribution. Then, by exploiting the spectroscopic sample we derived the stellar mass profiles of the clusters. Results. We obtained the luminosity profiles of 46 galaxy clusters, reaching r200 in 30 cases, and the stellar mass profiles of 42 of our objects. We successfully fitted all the integrated luminosity growth profiles with one or two embedded Sérsic components, deriving the main clusters parameters. Finally, we checked the main scaling relation among the clusters parameters in comparison with those obtained for a selected sample of early-type galaxies (ETGs) of the same clusters. Conclusions. We found that the nearby galaxy clusters are non-homologous structures such as ETGs and exhibit a color–magnitude (CM) red-sequence relation very similar to that observed for galaxies in clusters. These properties are not expected in the current cluster formation scenarios. In particular the existence of a CM relation for clusters, shown here for the first time, suggests that the baryonic structures grow and evolve in a similar way at all scales.

scholarly journals Deep spectroscopy of nearby galaxy clusters – II. The Hercules cluster

2017 ◽  
Vol 467 (4) ◽  
pp. 4410-4423 ◽  
Author(s):  
I. Agulli ◽  
J. A. L. Aguerri ◽  
A. Diaferio ◽  
L. Dominguez Palmero ◽  
R. Sánchez-Janssen
Keyword(s):  
Galaxy Clusters ◽  
Nearby Galaxy

scholarly journals Studying the dynamical properties of 20 nearby galaxy clusters

2011 ◽  
Vol 416 (3) ◽  
pp. 2027-2040 ◽  
Author(s):  
Mohamed H. Abdullah ◽  
Gamal B. Ali ◽  
H. A. Ismail ◽  
Mohamed A. Rassem
Keyword(s):  
Galaxy Clusters ◽  
Nearby Galaxy ◽  
Dynamical Properties

Biases in hydrostatic mass profiles introduced by hot gas substructures:Chandrastudy of four galaxy clusters

2010 ◽  
Vol 10 (10) ◽  
pp. 1005-1012 ◽  
Author(s):  
Li-Yi Gu ◽  
Yu Wang ◽  
Jun-Hua Gu ◽  
Jing-Ying Wang ◽  
Zhen-Zhen Qin ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Hot Gas ◽  
Mass Profiles

A comparison between observed and analytical velocity dispersion profiles of 20 nearby galaxy clusters

2014 ◽  
Vol 351 (1) ◽  
pp. 289-297
Author(s):  
Mohammad S. Khan ◽  
Mohamed H. Abdullah ◽  
Gamal B. Ali
Keyword(s):  
Galaxy Clusters ◽  
Velocity Dispersion ◽  
Nearby Galaxy

scholarly journals Mass profiles andc − MDMrelation in X-ray luminous galaxy clusters

2010 ◽  
Vol 524 ◽  
pp. A68 ◽  
Author(s):  
S. Ettori ◽  
F. Gastaldello ◽  
A. Leccardi ◽  
S. Molendi ◽  
M. Rossetti ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
X Ray ◽  
Mass Profiles

scholarly journals A study of catalogued nearby galaxy clusters in the SDSS-DR4

2010 ◽  
Vol 521 ◽  
pp. A28 ◽  
Author(s):  
J. A. L. Aguerri ◽  
R. Sánchez-Janssen
Keyword(s):  
Galaxy Clusters ◽  
Nearby Galaxy

Dynamic evolution of nearby galaxy clusters

2011 ◽  
Vol 332 (5) ◽  
pp. 537-544 ◽  
Author(s):  
M. Biernacka ◽  
P. Flin
Keyword(s):  
Galaxy Clusters ◽  
Dynamic Evolution ◽  
Nearby Galaxy

scholarly journals Annihilating dark matter search with 12 yr of Fermi LAT data in nearby galaxy clusters

2021 ◽  
Vol 502 (3) ◽  
pp. 4039-4047
Author(s):  
Charles Thorpe-Morgan ◽  
Denys Malyshev ◽  
Christoph-Alexander Stegen ◽  
Andrea Santangelo ◽  
Josef Jochum
Keyword(s):  
Dark Matter ◽  
Galaxy Clusters ◽  
Gamma Ray ◽  
Nearby Galaxy ◽  
Galactic Latitude ◽  
Dark Matter Search ◽  
Dwarf Spheroidal Galaxies ◽  
Characteristic Signal ◽  
Small Factor ◽  
The Impact

ABSTRACT Galaxy clusters are the largest virialized objects in the Universe and, as such, have high dark matter (DM) concentrations. This abundance of dark matter makes them promising targets for indirect DM searches. Here we report the details of a search, utilizing almost 12 yr of Fermi/LAT data, for gamma-ray signatures from the pair annihilation of WIMP dark matter in the GeV energy band. From this, we present the constraints on the annihilation cross-section for the $b\overline{b}$, W+W−, and γγ channels, derived from the non-detection of a characteristic signal from five nearby, high Galactic latitude, galaxy clusters (Centaurus, Coma, Virgo, Perseus, and Fornax). We discuss the potential of a boost to the signal due to the presence of substructures in the DM haloes of selected objects, as well as the impact of uncertainties in DM profiles on the presented results. We assert that the obtained limits are, within a small factor, comparable to the best available limits of those based on Fermi/LAT observations of dwarf spheroidal galaxies.

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