The Void Galaxy Survey
R. van de Weygaert, K. Kreckel, E. Platen, B. Beygu, J.H. van Gorkom,, J.M. van der Hulst, M.A. Aragon-Calvo, P.J.E. Peebles, T. Jarrett, G. Rhee,, K. Kovac, C.-W. Yip
TL;DR
The Void Galaxy Survey (VGS) investigates approximately 60 galaxies in cosmic voids, focusing on their gas, star formation, and dynamics, revealing potential cold gas accretion and unique configurations.
Contribution
This study introduces a comprehensive multi-wavelength survey of void galaxies using a novel geometric selection method, providing new insights into their properties and behaviors.
Findings
Evidence for cold gas accretion in some void galaxies
Detection of a polar ring galaxy and filamentary configurations
Detailed analysis of 15 pilot galaxies' properties
Abstract
The Void Galaxy Survey (VGS) is a multi-wavelength program to study 60 void galaxies. Each has been selected from the deepest interior regions of identified voids in the SDSS redshift survey on the basis of a unique geometric technique, with no a prior selection of intrinsic properties of the void galaxies. The project intends to study in detail the gas content, star formation history and stellar content, as well as kinematics and dynamics of void galaxies and their companions in a broad sample of void environments. It involves the HI imaging of the gas distribution in each of the VGS galaxies. Amongst its most tantalizing findings is the possible evidence for cold gas accretion in some of the most interesting objects, amongst which are a polar ring galaxy and a filamentary configuration of void galaxies. Here we shortly describe the scope of the VGS and the results of the full…
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