Journal article

Analysis of Sunyaev-Zel'dovich effect mass-observable relations using South Pole Telescope observations of an X-ray selected sample of low-mass galaxy clusters and groups

J Liu, J Mohr, A Saro, KA Aird, MLN Ashby, M Bautz, M Bayliss, BA Benson, LE Bleem, S Bocquet, M Brodwin, JE Carlstrom, CL Chang, I Chiu, HM Cho, A Clocchiatti, TM Crawford, AT Crites, T de Haan, S Desai Show all



We use microwave observations from the South Pole Telescope (SPT) to examine the Sunyaev- Zel'dovich effect (SZE) signatures of a sample of 46 X-ray selected groups and clusters drawn from ~6 deg2 of the XMM-Newton Blanco Cosmology Survey. These systems extend to redshift z = 1.02 and probe the SZE signal to the lowest X-ray luminosities (≥1042 erg s-1) yet; these sample characteristics make this analysis complementary to previous studies. We develop an analysis tool, using X-ray luminosity as a mass proxy, to extract selection-biascorrected constraints on the SZE significance and Y500 mass relations. The former is in good agreement with an extrapolation of the relation obtained from high-ma..

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University of Melbourne Researchers


Awarded by DFG

Awarded by National Science Foundation

Awarded by NSF Physics Frontier Center

Awarded by Gordon and Betty Moore Foundation

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Awarded by Division Of Astronomical Sciences

Awarded by Office of Polar Programs (OPP)

Funding Acknowledgements

We acknowledge the support of the DFG through TR33 'The Dark Universe' and the Cluster of Excellence 'Origin and Structure of the Universe'. Some calculations have been carried out on the computing facilities of the Computational Center for Particle and Astrophysics (C2PAP). The South Pole Telescope is supported by the National Science Foundation through grant PLR-1248097. Partial support is also provided by the NSF Physics Frontier Center grant PHY-1125897 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation and the Gordon and Betty Moore Foundation grant GBMF 947. This work is also supported by the US Department of Energy. Galaxy cluster research at Harvard is supported by NSF grants AST-1009012 and DGE-1144152. Galaxy cluster research at SAO is supported in part by NSF grants AST-1009649 and MRI-0723073. The McGill group acknowledges funding from the National Sciences and Engineering Research Council of Canada, Canada Research Chairs programme, and the Canadian Institute for Advanced Research.