Characterization of Omega-WINGS galaxy clusters. I. Stellar light and mass profiles

Abstract

Galaxy clusters are the largest virialized structures in the observable Universe. The knowledge of their properties provides many useful astrophysical and cosmological information. 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. We have merged the data of 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. We got the luminosity profiles of 46 galaxy clusters, reaching $r_{200}$ 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. We found that the nearby galaxy clusters are non-homologous structures like 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.

45 pages, 41 figures

References in corpus (18)

• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• CLASH: Weak-Lensing Shear-and-Magnification Analysis of 20 Galaxy Clusters
• CLASH: The Concentration-Mass Relation of Galaxy Clusters
• WINGS: A WIde-field Nearby Galaxy-cluster Survey. II. Deep optical photometry of 77 nearby clusters
• OmegaWINGS: OmegaCAM@VST observations of WINGS galaxy clusters
• A spectrophotometric model applied to cluster galaxies: the WINGS dataset
• Slow quenching of star formation in OMEGAWINGS clusters: galaxies in transition in the local universe
• OmegaWINGS: spectroscopy in the outskirts of local clusters of galaxies
• WINGS Data Release: a database of galaxies in nearby clusters
• Substructures in WINGS clusters
• The concentration-mass relation of clusters of galaxies from the OmegaWINGS survey
• The Fundamental Plane of Early Type Galaxies in Nearby Clusters from the WINGS Database
• Morphological Fractions of Galaxies in WINGS Clusters: revisiting the Morphology-Density Paradigm
• WINGS: a WIde-field nearby Galaxy-cluster survey III. Deep near-infrared photometry of 28 nearby clusters
• The ESO-Spitzer Imaging extragalactic Survey (ESIS) I: WFI B,V,R deep observations of ELAIS-S1 and comparison to Spitzer and GALEX data
• Hydrostatic and Caustic Mass Profiles of Galaxy Clusters
• Surface photometry of WINGS galaxies with GASPHOT
• Galaxy Luminosity Functions in WINGS clusters

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