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

Mehrtens, Nicola, Romer, A Kathy, Lloyd-Davies, E J, Hilton, Matt, Miller, Christopher J., Stanford, S A, Hosmer, Mark, Hoyle, Ben, Collins, Chris A, Liddle, Andrew R, Viana, Pedro T P, Nicholls, Robert, Stott, John P, Dubois, E. Naomi, Kay, Scott T, Sahlén, Martin, Young, Owain E, Short, C J, Christoforou, Linda, Watson, Wiliam, Davidson, Michael, Harrison, Craig. D, Baruah, Leon, Smith, Mathew, Burke, Claire, Deadmen, Paul-James, Rooney, Philip, Edmondson, Edward M, West, Michael, Campbell, Heather C, Edge, Alastair C., Mann, Robert G, Wake, David A., Benoist, Christopher, Da costa, Luiz, Maia, Marcio and Ogando, Ricardo (2011) The XMM Cluster Survey: Optical analysis methodology and the first data release. Monthly Notices of the Royal Astronomical Society, 66 (2). p. 1024. ISSN 1745-3925

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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, 255 are new to the literature and 356 are new X-ray discoveries. We present 464 clusters with a redshift estimate (0.06 < z < 1.46), including 261 clusters with spectroscopic redshifts. In addition, we have measured X-ray temperatures (Tx) for 402 clusters (0.4 < Tx < 14.7 keV). We highlight seven interesting subsamples of XCS-DR1 clusters: (i) 10 clusters at high redshift (z > 1.0, including a new spectroscopically-confirmed cluster at z = 1.01); (ii) 67 clusters with high Tx (> 5 keV); (iii) 131 clusters/groups with low Tx (< 2 keV); (iv) 27 clusters with measured Tx values in the SDSS `Stripe 82' co-add region; (v) 78 clusters with measured Tx 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) 105 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. (2010).

Item Type: Article
Additional Information: arXiv: 1106.3056
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QB Astronomy
Depositing User: Nicola Mehrtens
Date Deposited: 14 May 2012 10:57
Last Modified: 09 Mar 2017 11:31

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