X-ray Properties of Intermediate-Redshift Groups of Galaxies

Simple item page
dc.creatorJeltema, T. E.
dc.creatorMulchaey, J. S.
dc.creatorLubin, L. M.
dc.creatorRosati, P.
dc.creatorBohringer, H.
dc.date2006-06-02
dc.date.accessioned2026-07-07T10:39:10Z
dc.date.available2026-07-07T10:39:10Z
dc.descriptionWe have undertaken a multiwavelength project to study the relatively unknown properties of groups and poor clusters of galaxies at intermediate redshifts. In this paper, we describe the XMM-Newton observations of six X-ray selected groups with 0.2<z<0.6. The X-ray properties of these systems are generally in good agreement with the properties of low-redshift groups. They appear to follow the scaling relations between luminosity, temperature, and velocity dispersion defined by low-redshift groups and clusters. The X-ray emission in four of the six groups is also centered on a dominant early-type galaxy. The lack of a bright elliptical galaxy at the peak of the group X-ray emission is rare at low-redshifts, and the other two groups may be less dynamically evolved. We find indications of excess entropy in these systems over self-similar predictions out to large radii. We also confirm the presence of at least one X-ray luminous AGN associated with a group member galaxy and find several other potential group AGN.
dc.description31 pages, 13 figures, accepted to ApJ for version with full resolution figures see http://www.ociw.edu/~tesla/midzgroups.ps.gz
dc.identifierhttps://arxiv.org/abs/astro-ph/0606064
dc.identifierhttp://arxiv.org/abs/astro-ph/0606064
dc.identifierAstrophys.J.649:649-660,2006
dc.identifierdoi:10.1086/506372
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180936
dc.subjectAstrophysics
dc.titleX-ray Properties of Intermediate-Redshift Groups of Galaxies
dc.typetext

Files

Collections

arXiv