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The Group Evolution Multiwavelength Study (GEMS): The Sample and Datasets

Published online by Cambridge University Press:  05 March 2013

Duncan A. Forbes ,
Trevor Ponman ,
Frazer Pearce ,
John Osmond ,
Virginia Kilborn ,
Sarah Brough ,
Somak Raychaudhury ,
Carole Mundell ,
Trevor Miles  and
Katie Kern
Duncan A. Forbes*
Affiliation:
Centre for Astrophysics & Supercomputing, Swinburne University of Technology, Hawthorn VIC 3122, Australia
Trevor Ponman
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
Frazer Pearce
Affiliation:
School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
John Osmond
Affiliation:
Centre for Electronic Imaging, School of Engineering and Design, Brunel University, Uxbridge UB8 3PH, UK
Virginia Kilborn
Affiliation:
Centre for Astrophysics & Supercomputing, Swinburne University of Technology, Hawthorn VIC 3122, Australia
Sarah Brough
Affiliation:
Centre for Astrophysics & Supercomputing, Swinburne University of Technology, Hawthorn VIC 3122, Australia
Somak Raychaudhury
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
Carole Mundell
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD, UK
Trevor Miles
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
Katie Kern
Affiliation:
Centre for Astrophysics & Supercomputing, Swinburne University of Technology, Hawthorn VIC 3122, Australia
*
FCorresponding author. Email: dforbes@swin.edu.au
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Abstract

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Galaxy groups have been under-studied relative to their richer counterparts — clusters. The Group Evolution Multiwavelength Study (GEMS) aims to redress some of the balance. Here we describe the GEMS sample selection and resulting sample of 60 nearby (< 130 Mpc) galaxy groups and our multiwavelength dataset of X-ray, optical, and Hı imaging. ROSAT X-ray images of each group are presented. GEMS also utilizes near-infrared imaging from the 2MASS survey and optical spectra from the 6dFGS. These observational data are complemented by mock group catalogues generated from the latest ΓCDM simulations with gas physics included. Existing GEMS publications are briefly highlighted as are future publication plans.

Keywords

surveys: groupsgalaxies: evolutiongalaxies: formationgalaxies: groups
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 23 , Issue 1 , 2006 , pp. 38 - 49
Copyright
Copyright © Astronomical Society of Australia 2006

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