The Influence of the Dynamic State of Galaxy Clusters on Segregation Phenomena and Velocity Dispersion Profiles
arXiv:1812.01095 · doi:10.1093/mnrasl/sly229
Abstract
In this work we investigate the influence of the dynamic state of galaxy clusters on segregation effects and velocity dispersion profiles (VDPs) for a sample of 111 clusters extracted from SDSS-DR7. We find that 73 clusters have Gaussian (G) velocity distribution and 38 clusters have a complex or non-Gaussian (NG) velocity distribution. We also split the G and NG samples into 'active' and 'passive' galaxies, according to their sSFRs and stellar masses. Our results indicate a strong spatial segregation between active and passive galaxies both in G and NG systems, with passive galaxies being more central. We also found that the passive population in G systems is the only family with lower velocity dispersions for the brightest galaxies (), thus presenting velocity segregation with luminosity. The similarity found between the VDPs of the galaxy populations in NG systems indicate that these sets probably share a similar mix of orbits. We also found a clear evolutionary trend for G systems, with brighter galaxies in richer clusters having flatter VDPs. The scenario emerging from this study suggests a direct relationship between segregation effects, VDPs and the dynamic state of clusters.
arXiv commentAccepted for publication in MNRAS. 6 pages, 3 figures
References in corpus (37)
- The physical properties of star forming galaxies in the low redshift universe
- UV Star Formation Rates in the Local Universe
- Galaxy Groups in the SDSS DR4: I. The Catalogue and Basic Properties
- Galaxy evolution in groups and clusters: star formation rates, red sequence fractions, and the persistent bimodality
- Optical Mass Estimates of Galaxy Clusters
- Percolation Galaxy Groups and Clusters in the SDSS Redshift Survey: Identification, Catalogs, and the Multiplicity Function
- On the efficiency and reliability of cluster mass estimates based on member galaxies
- Photometric redshifts for the SDSS Data Release 12
- The velocity modulation of galaxy properties in and near clusters: quantifying the decrease in star formation in backsplash galaxies
- The RASS-SDSS Galaxy Cluster Survey. III. Scaling relations of galaxy clusters
- The ESO Nearby Abell Cluster Survey. XIII. The orbits of the different types of galaxies in rich clusters
- Satellite quenching timescales in clusters from projected phase space measurements matched to simulated orbits
- A Quantitative Measure of the Richness of Galaxy Clusters
- RASS-SDSS Galaxy Cluster Survey. VII. On the Cluster Mass to Light ratio and the Halo Occupation Distribution
- Statistical Tools for Classifying Galaxy Group Dynamics
- Galaxy Cluster Mass Reconstruction Project: II. Quantifying scatter and bias using contrasting mock catalogues
- Multiple merging in the Abell cluster 1367
- Velocity Dispersion of 335 Galaxy Clusters Selected from the Sloan Digital Sky Survey: Statistical Evidence for Dynamical Interaction, and Against Ram-Pressure Stripping
- Galaxy And Mass Assembly (GAMA): impact of the group environment on galaxy star formation
- SPIDER - III. Environmental Dependence of the Fundamental Plane of Early-type Galaxies
- Substructure in the Most Massive GEEC Groups: Field-like Populations in Dynamically Active Groups
- NoSOCS in SDSS. I. Sample Definition and Comparison of Mass Estimates
- SPIDER IX - Classifying Galaxy Groups according to their Velocity Distribution
- Empirical Photometric Redshifts of Luminous Red Galaxies and Clusters in SDSS
- Morphology and luminosity segregation of galaxies in nearby loose groups
- NoSOCS in SDSS III - The interplay between galaxy evolution and the dynamical state of galaxy clusters
- Investigating the Relation between Galaxy Properties and the Gaussianity of the Velocity Distribution of Groups and Clusters
- Non-Gaussian velocity distributions - The effect on virial mass estimates of galaxy groups
- Structural and dynamical modeling of WINGS clusters. I. The distribution of cluster galaxies of different morphological classes within regular and irregular clusters
- Segregation Effects According to the Evolutionary Stage of Galaxy Groups
- Connecting optical and X-ray tracers of galaxy cluster relaxation
- The dynamical state of galaxy groups and their luminosity content
- How typical is the Coma cluster?
- The Kinematics of Cluster Galaxies via Velocity Dispersion Profiles
- Dynamical segregation of galaxies in groups and clusters
- The Shape of Velocity Dispersion Profiles and the Dynamical State of Galaxy Clusters
- Segregation effects in DEEP2 galaxy groups
Cited by in corpus (7)
- Ram pressure stripping of HI-rich galaxies infalling into massive clusters
- Classification and Evolution of Galaxies According to the Dynamical State of Host Clusters and Galaxy Luminosities
- On the reliability of photometric and spectroscopic tracers of halo relaxation
- The Rotational Profiles of Cluster Galaxies
- "Observing" Unrelaxed Clusters in Dark Matter Simulations
- Boosting the evolutionary picture of Cl 0024+17 and MS 0451-03: A case study at intermediate-redshift
- Late growth of early-type galaxies in low-z massive clusters