Ultra Diffuse Galaxies in the IC1459 Group from the VEGAS Survey

Abstract

Using deep g,r,i imaging from the VEGAS survey, we have searched for ultra diffuse galaxies (UDGs) in the IC 1459 group. Assuming they are group members, we identify 9 galaxies with physical sizes and surface brightnesses that match the UDG criteria within our measurement uncertainties. They have mean colours of g--i = 0.6 and stellar masses of $\sim$10${}^8$ M${}_{\odot }$. Several galaxies appear to have associated systems of compact objects, e.g. globular clusters. Two UDGs contain a central bright nucleus, with a third UDG revealing a remarkable double nucleus. This appears to be the first reported detection of a double nucleus in a UDG - its origin is currently unclear.

6 pages, 4 figures, accepted for publication in MNRAS

References in corpus (9)

• Forty-Seven Milky Way-Sized, Extremely Diffuse Galaxies in the Coma Cluster
• Extensive Globular Cluster Systems Associated with Ultra Diffuse Galaxies in the Coma Cluster
• The formation and evolution of low-surface-brightness galaxies
• Globular Clusters in Coma Cluster Ultra Diffuse Galaxies (UDGs): Evidence for Two Types of UDG?
• Southern GEMS Groups I: Dynamical Properties
• The Distribution of Ultra-Diffuse and Ultra-Compact Galaxies in the Frontier Fields
• An Ultra diffuse Galaxy in the NGC 5846 group from the VEGAS survey
• VEGAS: VST Early-type GAlaxy Survey. V. IC 1459 group: Mass assembly history in low density environments
• The supermassive black hole and double nucleus of the core elliptical NGC5419

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