Compact groups in the UZC galaxy sample

Abstract

Applying an automatic neighbour search algorithm to the 3D UZC galaxy catalogue (Falco 1999) we have identified 291 compact groups (CGs) with redshifts between 1000 and 10000 km/s. The sample is analysed to investigate whether Triplets display kinematical and morphological characteristics similar to higher order CGs (Multiplets). It is found that Triplets constitute low velocity dispersion structures, have a gas-rich galaxy population and are typically retrieved in sparse environments. Conversely Multiplets show higher velocity dispersion, include few gas-rich members and are generally embedded structures. Evidence hence emerges indicating that Triplets and Multiplets, though sharing a common scale, correspond to different galaxy systems. Triplets are typically field structures whilst Multiplets are mainly subclumps (either temporarily projected or collapsing) within larger structures. Simulations show that selection effects can only partially account for differences, but significant contamination of Triplets by field galaxy interlopers could eventually induce the observed dependences on multiplicity.

13 pages, 12 figures. The file is in latex (A & A style) format. The figures are in postscript. A & A accepted

References in corpus (2)

• Where is the Neutral Atomic Gas in Hickson Groups?
• FLAIR-II spectroscopy of two DENIS J-band galaxy samples

Cited by in corpus (51)

• The 2MASS Redshift Survey - Description and Data Release
• The shape of oxygen abundance profiles explored with MUSE: evidence for widespread deviations from single gradients
• Molecular depletion times and the CO-to-H2 conversion factor in metal-poor galaxies
• Compact groups in theory and practice - III. Compact groups of galaxies in the Sixth Data Release of the Sloan Digital Sky Survey
• A Catalog of Compact Groups of Galaxies in the SDSS Commissioning Data
• The HI content of early-type galaxies from the ALFALFA survey. II. The case of low density environments
• The relation between galaxy activity and the dynamics of compact groups of galaxies
• Compact Groups of Galaxies selected by stellar mass: The 2MASS Compact Group Catalogue
• The Evolution of Galaxies in X-ray Luminous Groups
• Compact groups in theory and practice - I. The spatial properties of compact groups
• Compact groups from the Millennium Simulations: I. Their Nature and the completeness of the Hickson sample
• Tidal streams in newly discovered M32 analogues: evidence for the stripping scenario
• The Shape of Poor Groups of Galaxies
• Where are compact groups in the local Universe?
• HI Observations of Five Groups of Galaxies
• Encounters between spherical galaxies II: systems with dark halo
• The Relation Between Halo Shape, Velocity Dispersion and Formation Time
• Dark matter halos around isolated ellipticals
• Discovery of Counter-Rotating Gas in the Galaxies NGC1596 and NGC3203 and the Incidence of Gas Counter-Rotation in S0 Galaxies
• Compact Groups in the UZC galaxy sample: II. Connections between morphology, luminosity and large-scale density
• Catalogs of Compact Groups of Galaxies from the Enhanced SDSS DR12
• Properties of Hickson Compact Groups and of the Loose Groups within which they are Embedded
• Polar Ring Galaxies in the Galaxy Zoo
• The diverse X-ray properties of four truly isolated elliptical galaxies: NGC 2954, NGC 6172, NGC 7052, and NGC 7785
• Deficiency of Broad Line AGNs in Compact Groups of Galaxies
• A new sample of bright galaxy pairs in UZC
• Improving Hickson-like compact group finders in redshift surveys: an implementation in the SDSS
• The Properties of the Heterogeneous Shakhbazyan Groups of Galaxies in the SDSS
• The statistical properties of galaxy morphological types in compact groups of Main galaxies from the SDSS Data Release 4
• The effect of the environment on the Faber Jackson relation
• Star Formation in Partially Gas-Depleted Spiral Galaxies
• Seyfert galaxies in UZC-Compact Groups
• Morphological and Luminosity Content of Poor Galaxy Groups
• On the properties of compact groups identified in different photometric bands
• UGC 4599: A Photometric Study of the Nearest Hoag-Type Ring Galaxy
• Compact groups from semi-analytical models of galaxy formation -- III: purity and completeness of Hickson-like catalogues
• Radio Continuum and HI study of Blue Compact Dwarf Galaxies
• Compact groups from semi-analytical models of galaxy formation -- I: a comparative study of frequency and nature
• Small scale systems of galaxies I. Photometric and spectroscopic properties of members
• Quantifying the Importance of Ram Pressure Stripping in a Galaxy Group at 100 Mpc
• The influence of Hickson-like compact group environment on galaxy luminosities
• Star Formation in Outer Rings of S0 galaxies. V. UGC 4599 -- an S0 with gas probably accreted from a filament
• Comparing galaxy populations in compact and loose groups of galaxies II: brightest group galaxies
• The origin of redshift asymmetries: How LambdaCDM explains anomalous redshift
• Star formation in Blue compact dwarf galaxies: Mkn 104 & I Zw 97
• Galaxy groups in the 2dF galaxy redshift survey: A Compactness Analysis of Groups
• On the Xray Luminosity - velocity dispersion relation of groups of galaxies
• Clusters and Groups of Galaxies in the Simulated Local Universe
• Compact groups of galaxies in GAMA -- Probing the densest minor systems at intermediate redshifts
• Nuclear activity in galaxy pairs: a spectroscopic analysis of 48 UZC-BGPs
• The most distant compact groups