Journal article
Weak-lensing mass measurements of five galaxy clusters in the south pole telescope survey using Magellan/Megacam
FW High, H Hoekstra, N Leethochawalit, T De Haan, L Abramson, KA Aird, R Armstrong, MLN Ashby, M Bautz, M Bayliss, G Bazin, BA Benson, LE Bleem, M Brodwin, JE Carlstrom, CL Chang, HM Cho, A Clocchiatti, M Conroy, TM Crawford Show all
Astrophysical Journal | Published : 2012
Abstract
We use weak gravitational lensing to measure the masses of five galaxy clusters selected from the South Pole Telescope (SPT) survey, with the primary goal of comparing these with the SPT Sunyaev-Zel'dovich (SZ) and X-ray-based mass estimates. The clusters span redshifts 0.28 < z < 0.43 and have masses M500 > 2 × 1014 h -1 M ⊙, and three of the five clusters were discovered by the SPT survey. We observed the clusters in the g′r′i′ passbands with the Megacam imager on the Magellan Clay 6.5m telescope. We measure a mean ratio of weak-lensing (WL) aperture masses to inferred aperture masses from the SZ data, both within an aperture of R 500, SZ derived from the SZ mass, of 1.04 ± 0.18. We measur..
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Awarded by Seventh Framework Programme
Funding Acknowledgements
[ "The South Pole Telescope program is supported by the National Science Foundation through grant ANT-0638937. Partial support is also provided by the NSF Physics Frontier Center grant PHY-0114422 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation, and the Gordon and Betty Moore Foundation. H.H. acknowledges support from Marie Curie IRG grant 230924 and the Netherlands Organisation for Scientific Research (NWO) grant No. 639.042.814. The Munich group acknowledges support from the Excellence Cluster Universe and the DFG research program TR33 The Dark Universe. Galaxy cluster research at Harvard is supported by NSF grant AST-1009012, and 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 program, and the Canadian Institute for Advanced Research. R.J.F. is supported by a Clay fellowship.", "This paper used data products produced by the OIR Telescope Data Center, supported by the Smithsonian Astrophysical Observatory." ]