2006/01/01 by Duncan A. Forbes, T. J. Ponman, Trevor Ponman +12
Mathematics · Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Group (periodic table) #Large sample #Local Group #Mathematics #Milky Way #Physics #Political science #ROSAT #Redress #Sample (material) #Statistics #astro-ph
paper · pdf · doi:10.1071/as06002
Accepted for publication in PASA. Paper plus additional figures in jpg format
openalex publication_date 2006/01/01 · arxiv created 2006/02/09 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
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 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.