The XMM Cluster Survey: optical analysis methodology and the first data release

Mehrtens, Nicola; Romer, A. Kathy; Hilton, Matt; Lloyd-Davies, E. J.; Miller, Christopher J.; Stanford, S. A.; Hosmer, Mark; Hoyle, Ben; Collins, Chris A.; Liddle, Andrew R.; Viana, Pedro T. P.; Nichol, Robert C.; Stott, John P.; Dubois, E. Naomi; Kay, Scott T.; Sahlén, Martin; Young, Owain; Short, C. J.; Christodoulou, L.; Watson, William A.; Davidson, Michael; Harrison, Craig D.; Baruah, Leon; Smith, Mathew; Burke, Claire; Mayers, Julian A.; Deadman, Paul-James; Rooney, Philip J.; Edmondson, Edward M.; West, Michael; Campbell, Heather C.; Edge, Alastair C.; Mann, Robert G.; Sabirli, Kivanc; Wake, David; Benoist, Christophe; da Costa, Luiz; Maia, Marcio A. G. and Ogando, Ricardo (2012). The XMM Cluster Survey: optical analysis methodology and the first data release. Monthly Notices of the Royal Astronomical Society, 423(2) pp. 1024–1052.

DOI: https://doi.org/10.1111/j.1365-2966.2012.20931.x

Abstract

The XMM Cluster Survey (XCS) is a serendipitous search for galaxy clusters using all publicly available data in the XMM–Newton Science Archive. Its main aims are to measure cosmological parameters and trace the evolution of X-ray scaling relations. In this paper we present the first data release from the XMM Cluster Survey (XCS-DR1). This consists of 503 optically confirmed, serendipitously detected, X-ray clusters. Of these clusters, 256 are new to the literature and 357 are new X-ray discoveries. We present 463 clusters with a redshift estimate (0.06 < ɀ < 1.46), including 261 clusters with spectroscopic redshifts. The remainder have photometric redshifts. In addition, we have measured X-ray temperatures (T_X) for 401 clusters (0.4 < T_X < 14.7 keV). We highlight seven interesting subsamples of XCS-DR1 clusters: (i) 10 clusters at high redshift (ɀ > 1.0, including a new spectroscopically confirmed cluster at ɀ = 1.01); (ii) 66 clusters with high T_X (>5 keV); (iii) 130 clusters/groups with low T_X (<2 keV); (iv) 27 clusters with measured T_X values in the Sloan Digital Sky Survey (SDSS) ‘Stripe 82’ co-add region; (v) 77 clusters with measured T_X values in the Dark Energy Survey region; (vi) 40 clusters detected with sufficient counts to permit mass measurements (under the assumption of hydrostatic equilibrium); (vii) 104 clusters that can be used for applications such as the derivation of cosmological parameters and the measurement of cluster scaling relations. The X-ray analysis methodology used to construct and analyse the XCS-DR1 cluster sample has been presented in a companion paper, Lloyd-Davies et al.

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• Item ORO ID
• 38282
• Item Type
• Journal Item
• ISSN
• 1365-2966
• Project Funding Details

• Funded Project Name	Project ID	Funding Body
  Not Set	ST/F002858/1	The Science and Technology Facilities Council (STFC)
  Not Set	ST/I000976/1	The Science and Technology Facilities Council (STFC)
  Not Set	ST/H002391/1	The Science and Technology Facilities Council (STFC)
  Not Set	PP/E001149/1	The Science and Technology Facilities Council (STFC)
  Not Set	ST/G002592/1	The Science and Technology Facilities Council (STFC)
  Not Set	ST/H002774/1	The Science and Technology Facilities Council (STFC)
  Not Set	ST/I001204/1	The Science and Technology Facilities Council (STFC)
  Not Set	FP7-PEOPLE- 2007-4 D3-IRG n 20218	The University of KwaZulu-Natal
  Not Set	Not Set	The Leverhulme Trust
  Not Set	Not Set	University of Sussex
  Not Set	PTDC/CTE-AST/64711/2006	Fundac¸ ˜ao para a Ciˆencia e a Tecnologia
  Not Set	Not Set	South East Physics Network
  Not Set	Not Set	The Swedish Research Council (VR) through the Oskar Klein Centre for Cosmoparticle Physics
  Not Set	Not Set	RAS Hosie Bequest
  Not Set	Not Set	University of Edinburgh
  Not Set	W-7405-Eng-48	U.S. Department of Energy, National Nuclear Security Administration by the University of California, Lawrence Livermore National Laboratory
  Not Set	Not Set	Greek State Scholarship Foundation, trustee of the Nik. D. Chrysovergis legacy

• Keywords
• techniques - photometric; techniques - spectroscopic; surveys; galaxies - clusters - individual: XMMXCS J091821.9+211446.0; galaxies - distances and redshifts; X-rays - galaxies - clusters
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2012 The Authors, © 2012 RAS Monthly Notices of the Royal Astronomical Society
• Depositing User
• Astrid Peterkin