Constraints on the richness–mass relation and the optical-SZE positional offset distribution for SZE-selected clusters
dc.contributor.author | McDonald, Michael A. | |
dc.date.accessioned | 2017-05-11T16:32:13Z | |
dc.date.available | 2017-05-11T16:32:13Z | |
dc.date.issued | 2015-10 | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.issn | 1365-2966 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/108814 | |
dc.description.abstract | We cross-match galaxy cluster candidates selected via their Sunyaev–Zel'dovich effect (SZE) signatures in 129.1 deg[superscript 2] of the South Pole Telescope 2500d SPT-SZ survey with optically identified clusters selected from the Dark Energy Survey science verification data. We identify 25 clusters between 0.1 ≲ z ≲ 0.8 in the union of the SPT-SZ and redMaPPer (RM) samples. RM is an optical cluster finding algorithm that also returns a richness estimate for each cluster. We model the richness λ-mass relation with the following function 〈ln λ|M500〉 ∝ Bλln M500 + Cλln E(z) and use SPT-SZ cluster masses and RM richnesses λ to constrain the parameters. We find Bλ=1.14[superscript +0.21][subscript −0.18 and Cλ=0.73[superscript +0.77][subscript −0.75]. The associated scatter in mass at fixed richness is σlnM|λ=0.18[superscript +0.08][subscript −0.05] at a characteristic richness λ = 70. We demonstrate that our model provides an adequate description of the matched sample, showing that the fraction of SPT-SZ-selected clusters with RM counterparts is consistent with expectations and that the fraction of RM-selected clusters with SPT-SZ counterparts is in mild tension with expectation. We model the optical-SZE cluster positional offset distribution with the sum of two Gaussians, showing that it is consistent with a dominant, centrally peaked population and a subdominant population characterized by larger offsets. We also cross-match the RM catalogue with SPT-SZ candidates below the official catalogue threshold significance ξ = 4.5, using the RM catalogue to provide optical confirmation and redshifts for 15 additional clusters with ξ ∈ [4, 4.5]. | en_US |
dc.description.sponsorship | Kavli Foundation | en_US |
dc.description.sponsorship | Gordon and Betty Moore Foundation (Grant GBMF 947) | en_US |
dc.language.iso | en_US | |
dc.publisher | Oxford University Press | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1093/mnras/stv2141 | en_US |
dc.rights | Creative Commons Attribution-Noncommercial-Share Alike | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | en_US |
dc.source | arXiv | en_US |
dc.title | Constraints on the richness–mass relation and the optical-SZE positional offset distribution for SZE-selected clusters | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Saro, A. et al. “Constraints on the Richness–mass Relation and the Optical-SZE Positional Offset Distribution for SZE-Selected Clusters.” Monthly Notices of the Royal Astronomical Society 454.3 (2015): 2305–2319. | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
dc.contributor.department | MIT Kavli Institute for Astrophysics and Space Research | en_US |
dc.contributor.mitauthor | McDonald, Michael A. | |
dc.relation.journal | Monthly Notices of the Royal Astronomical Society | en_US |
dc.eprint.version | Original manuscript | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/NonPeerReviewed | en_US |
dspace.orderedauthors | Saro, A.; Bocquet, S.; Rozo, E.; Benson, B. A.; Mohr, J.; Rykoff, E. S.; Soares-Santos, M.; Bleem, L.; Dodelson, S.; Melchior, P.; Sobreira, F.; Upadhyay, V.; Weller, J.; Abbott, T.; Abdalla, F. B.; Allam, S.; Armstrong, R.; Banerji, M.; Bauer, A. H.; Bayliss, M.; Benoit-Lévy, A.; Bernstein, G. M.; Bertin, E.; Brodwin, M.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Carlstrom, J. E.; Capasso, R.; Capozzi, D.; Carnero Rosell, A.; Carrasco Kind, M.; Chiu, I.; Covarrubias, R.; Crawford, T. M.; Crocce, M.; D'Andrea, C. B.; da Costa, L. N.; DePoy, D. L.; Desai, S.; de Haan, T.; Diehl, H. T.; Dietrich, J. P.; Doel, P.; Cunha, C. E; Eifler, T. F.; Evrard, A. E.; Fausti Neto, A.; Fernandez, E.; Flaugher, B.; Fosalba, P.; Frieman, J.; Gangkofner, C.; Gaztanaga, E.; Gerdes, D.; Gruen, D.; Gruendl, R. A.; Gupta, N.; Hennig, C.; Holzapfel, W. L.; Honscheid, K.; Jain, B.; James, D.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; Li, T. S.; Lin, H.; Maia, M. A. G.; March, M.; Marshall, J. L.; Martini, Paul; McDonald, M.; Miller, C.J.; Miquel, R.; Nord, B.; Ogando, R.; Plazas, A. A.; Reichardt, C. L.; Romer, A. K.; Roodman, A.; Sako, M.; Sanchez, E.; Schubnell, M.; Sevilla, I.; Smith, R. C.; Stalder, B.; Stark, A. A.; Strazzullo, V.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thaler, J.; Thomas, D.; Tucker, D.; Vikram, V.; von der Linden, A.; Walker, A. R.; Wechsler, R. H.; Wester, W.; Zenteno, A.; Ziegler, K. E. | en_US |
dspace.embargo.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0001-5226-8349 | |
mit.license | OPEN_ACCESS_POLICY | en_US |
mit.metadata.status | Complete |