The Next Generation Virgo Cluster Survey. X. Properties of Ultra-Compact Dwarfs in the M87, M49 and M60 Regions

Abstract

We use imaging from the Next Generation Virgo cluster Survey (NGVS) to present a comparative study of ultra-compact dwarf (UCD) galaxies associated with three prominent Virgo sub-clusters: those centered on the massive, red-sequence galaxies M87, M49 and M60. We show how UCDs can be selected with high completeness using a combination of half-light radius and location in color-color diagrams ($u^{\ast }i{K}_s$ or $u^{\ast }gz$). Although the central galaxies in each of these sub-clusters have nearly identical luminosities and stellar masses, we find large differences in the sizes of their UCD populations, with M87 containing ~3.5 and 7.8 times more UCDs than M49 and M60, respectively. The relative abundance of UCDs in the three regions scales in proportion to sub-cluster mass, as traced by X-ray gas mass, total gravitating mass, number of globular clusters, and number of nearby galaxies. We find that the UCDs are predominantly blue in color, with ~85% of the UCDs having colors similar to blue GCs and stellar nuclei of dwarf galaxies. We present evidence that UCDs surrounding M87 and M49 may follow a morphological sequence ordered by the prominence of their outer, low surface brightness envelope, ultimately merging with the sequence of nucleated low-mass galaxies, and that envelope prominence correlates with distance from either galaxy. Our analysis provides evidence that tidal stripping of nucleated galaxies is an important process in the formation of UCDs.

37 pages, 40 figures. To appear in The Astrophysical Journal

References in corpus (31)

• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• The ACS Virgo Cluster Survey. VIII. The Nuclei of Early-Type Galaxies
• The ACS Virgo Cluster Survey XV. The Formation Efficiencies of Globular Clusters in Early-Type Galaxies: The Effects of Mass and Environment
• The ACS Virgo Cluster Survey. XII. The Luminosity Function of Globular Clusters in Early Type Galaxies
• A Supermassive Black Hole in an Ultracompact Dwarf Galaxy
• Galaxies at the extremes: Ultra-diffuse galaxies in the Virgo Cluster
• MegaPipe: the MegaCam image stacking pipeline at the Canadian Astronomical Data Centre
• The AIMSS Project I: Bridging the Star Cluster - Galaxy Divide
• Explaining the Color Distributions of Globular Cluster Systems in Elliptical Galaxies
• The Nature of UCDs: Internal Dynamics from an Expanded Sample and Homogeneous Database
• The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). IV: The role of the cluster environment on galaxy evolution
• Globular Cluster Systems in Giant Ellipticals: the Mass/Metallicity Relation
• Contribution of stripped nuclear clusters to globular cluster and ultra-compact dwarf galaxy populations
• The ACS Virgo Cluster Survey. XIV. Analysis of Color-Magnitude Relations in Globular Cluster Systems
• The Next Generation Virgo Cluster Survey. VI. The Kinematics of Ultra-compact Dwarfs and Globular Clusters in M87
• Structural Properties of Ultra-Compact Dwarf Galaxies in the Fornax and Virgo Clusters
• Stripped gas as fuel for newly formed HII regions in the encounter between VCC1249 and M49: a unified picture from NGVS and GUViCS
• On the Metallicity-Color Relations and Bimodal Color Distributions in Extragalactic Globular Cluster Systems
• The Next Generation Virgo Cluster Survey. XII. Stellar Populations and Kinematics of Compact, Low-Mass Early-Type Galaxies from Gemini GMOS-IFU Spectroscopy
• The Next Generation Virgo cluster Survey. V. modelling the dynamics of M87 with the Made-to-Measure method
• An Ultra Compact Dwarf around the Sombrero galaxy (M104): the Nearest Massive UCD
• Bimodal Infrared Colors of the M87 Globular Cluster System: Peaks in the Metallicity Distribution
• A search for ultra-compact dwarf galaxies in the Centaurus galaxy cluster
• A Quantitative Link Between Globular Clusters and the Stellar Halos in Elliptical Galaxies
• Searches for Ultra-Compact Dwarf Galaxies in Galaxy Groups
• UCD Candidates in the Hydra Cluster
• The Next Generation Virgo Cluster Survey. XV. The photometric redshift estimation for background sources
• How elevated is the dynamical-to-stellar mass ratio of the ultra-compact dwarf S999?
• Compact stellar systems and cluster environments
• The Next Generation Virgo Cluster Survey. IX. Estimating the Efficiency of Galaxy Formation on the Lowest-Mass Scales
• Ultra-Compact Dwarf Candidates Near the Lensing Galaxy in Abell S0740

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• Virgo Redux: The Masses and Stellar Content of Nuclei in Early-Type Galaxies from Multi-Band Photometry and Spectroscopy
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