ISO's Contribution to the Study of Clusters of Galaxies

Abstract

Starting with nearby galaxy clusters like Virgo and Coma, and continuing out to the furthest galaxy clusters for which ISO results have yet been published ($z=0.56$), we discuss the development of knowledge of the infrared and associated physical properties of galaxy clusters from early IRAS observations, through the "ISO-era" to the present, in order to explore the status of ISO's contribution to this field. Relevant IRAS and ISO programmes are reviewed, addressing both the cluster galaxies and the still-very-limited evidence for an infrared-emitting intra-cluster medium. ISO made important advances in knowledge of both nearby and distant galaxy clusters, such as the discovery of a major cold dust component in Virgo and Coma cluster galaxies, the elaboration of the correlation between dust emission and Hubble-type, and the detection of numerous Luminous Infrared Galaxies (LIRGs) in several distant clusters. These and consequent achievements are underlined and described. We recall that, due to observing time constraints, ISO's coverage of higher-redshift galaxy clusters to the depths required to detect and study statistically significant samples of cluster galaxies over a range of morphological types could not be comprehensive and systematic, and such systematic coverage of distant clusters will be an important achievement of the Spitzer Observatory.

22 pages, 7 figures. Accepted for publication in Space Science Reviews ISO Special Issue "ISO science legacy - a compact review of ISO major achievements", Ed.C.Cesarky & A.Salama Updated 23 Aug. 2005 in order to change some citations from astro-ph nos. to full Journal references after they were published

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• Dust-Obscured Star-Formation in Intermediate Redshift Galaxy Clusters
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• LoCuSS: Luminous infrared galaxies in the merging cluster Abell 1758 at z=0.28
• SPITZER observations of Abell 1763. III. The infrared luminosity function in different supercluster environments
• Spitzer 24 micron detections of starburst galaxies in Abell 851
• Dust-obscured star-formation in the outskirts of XMMU J2235.3-2557, a massive galaxy cluster at z=1.4
• Obscured Starburst Activity in High Redshift Clusters and Groups
• LoCuSS: A Herschel view of obscured star formation in Abell 1835
• Deep Herschel view of obscured star formation in the Bullet cluster
• Optical and Infrared Diagnostics of SDSS galaxies in the SWIRE Survey
• ACCESS III: The Nature of Star Formation in the Shapley Supercluster
• Herschel-ATLAS: detection of a far-infrared population around galaxy clusters
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• Revealing Dust Obscured Star Formation in CLJ1449+0856, a Cluster at z=2
• Submillimetre observations of galaxy clusters with BLAST: the star-formation activity in Abell 3112
• Clusters of galaxies: setting the stage
• Herschel-ATLAS/GAMA:How does the far-IR luminosity function depend on galaxy group properties?