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Title

The Group Evolution Multiwavelength Study (GEMS): the sample and datasets

Author(s)

Forbes, Duncan A.;  Ponman, Trevor;  Pearce, Frazer;  Osmond, John;  Kilborn, Virginia A.;  Brough, Sarah;  Raychaudhury, Somak;  Mundell, Carole;  Miles, Trevor;  Kern, Katie

Abstract

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 Hi 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 ΛCDM simulations with gas physics included. Existing GEMS publications are briefly highlighted as are future publication plans.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing

Source

Publications of the Astronomical Society of Australia, Vol. 23, no. 1 (Mar 2006), pp. 38-49

Publication year

2006

FOR Code(s)

0201 Astronomical and Space Sciences

Keyword(s)

Galaxy evolution;  Galaxy formation;  Galaxy groups;  Surveys;  Galaxies

Publisher

CSIRO Publishing

ISSN

1323-3580

Publisher URL

http://dx.doi.org/10.1071/AS06002

Copyright

Copyright © Astronomical Society of Australia 2005. Authors' version of the paper reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed