Professor Alastair Edge alastair.edge@durham.ac.uk
Professor
The discovery of two distant, massive clusters of galaxies in the ROSAT All-Sky Survey
Edge, A.C.; Ebeling, H.; Bremer, M.; Röttgering, H.; van Haarlem, M.P.; Rengelink, R.; Courtney, N.J.D.
Authors
H. Ebeling
M. Bremer
H. Röttgering
M.P. van Haarlem
R. Rengelink
N.J.D. Courtney
Abstract
We discuss the radio, optical, and X-ray properties of two newly discovered, very X-ray luminous, distant clusters of galaxies. Both systems were noted as cluster candidates in a cross-correlation of data from the WENSS radio survey and the ROSAT All-Sky Survey. Follow-up observations performed by us and the Massive Cluster Survey (MACS) team confirmed both sources as distant galaxy clusters. The first cluster, MACS J0717.5+3745 at a redshift of z= 0.5548, contains a very extended, steep-spectrum radio source offset from the cluster core, making it the most distant radio relic known. The second cluster, MACS J1621.3+3810 at z= 0.465, is a strong cooling flow with a relatively weak central radio source. We present results from ROSAT High-Resolution Imager (HRI) observations of both clusters as well as from optical imaging and VLA radio interferometry observations. Our discoveries demonstrate that distant clusters can be efficiently identified in a relatively shallow X-ray survey, that radio/X-ray selection is efficient, and that both cooling flow and non-cooling flow clusters are selected.
Citation
Edge, A., Ebeling, H., Bremer, M., Röttgering, H., van Haarlem, M., Rengelink, R., & Courtney, N. (2003). The discovery of two distant, massive clusters of galaxies in the ROSAT All-Sky Survey. Monthly Notices of the Royal Astronomical Society, 339(4), 913-924. https://doi.org/10.1046/j.1365-8711.2003.06270.x
Journal Article Type | Article |
---|---|
Publication Date | 2003-03 |
Deposit Date | Nov 22, 2006 |
Publicly Available Date | Aug 11, 2014 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 339 |
Issue | 4 |
Pages | 913-924 |
DOI | https://doi.org/10.1046/j.1365-8711.2003.06270.x |
Keywords | Galaxies, Clusters, MACS J0717.5+3745, MACS J1621.3+3810, Cooling flows, Radio continuum. |
Publisher URL | http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2003MNRAS.339..913E&db_key=AST |
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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2003 The Authors Published on behalf of Royal Astronomical Society. All rights reserved.
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