dc.contributor.author | Bocquet, S. | |
dc.contributor.author | Saro, A. | |
dc.contributor.author | Mohr, J. J. | |
dc.contributor.author | Aird, K. A. | |
dc.contributor.author | Ashby, Matthew L N | |
dc.contributor.author | Bautz, M. | |
dc.contributor.author | Bayliss, Matthew | |
dc.contributor.author | Bazin, G. | |
dc.contributor.author | Benson, B. A. | |
dc.contributor.author | Bleem, L. E. | |
dc.contributor.author | Brodwin, M. | |
dc.contributor.author | Carlstrom, J. E. | |
dc.contributor.author | Chang, C. L. | |
dc.contributor.author | Chiu, I. | |
dc.contributor.author | Cho, H. M. | |
dc.contributor.author | Clocchiatti, A. | |
dc.contributor.author | Crawford, T. M. | |
dc.contributor.author | Crites, A. T. | |
dc.contributor.author | Desai, S. | |
dc.contributor.author | de Haan, T. | |
dc.contributor.author | Dietrich, J. P. | |
dc.contributor.author | Dobbs, M. A. | |
dc.contributor.author | Foley, R. J. | |
dc.contributor.author | Forman, William R. | |
dc.contributor.author | Gangkofner, D. | |
dc.contributor.author | George, E. M. | |
dc.contributor.author | Gladders, M. D. | |
dc.contributor.author | Gonzalez, A. H. | |
dc.contributor.author | Halverson, N. W. | |
dc.contributor.author | Hennig, C. | |
dc.contributor.author | Hlavacek-Larrondo, J. | |
dc.contributor.author | Holder, G. P. | |
dc.contributor.author | Holzapfel, W. L. | |
dc.contributor.author | Hrubes, J. D. | |
dc.contributor.author | Jones, C. | |
dc.contributor.author | Keisler, R. | |
dc.contributor.author | Knox, L. | |
dc.contributor.author | Lee, A. T. | |
dc.contributor.author | Leitch, E. M. | |
dc.contributor.author | Liu, J. | |
dc.contributor.author | Lueker, M. | |
dc.contributor.author | Luong-Van, D. | |
dc.contributor.author | Marrone, D. P. | |
dc.contributor.author | McDonald, M. | |
dc.contributor.author | McMahon, J. J. | |
dc.contributor.author | Meyer, S. S. | |
dc.contributor.author | Mocanu, L. | |
dc.contributor.author | Murray, S. S. | |
dc.contributor.author | Padin, S. | |
dc.contributor.author | Pryke, C. | |
dc.contributor.author | Reichardt, C. L. | |
dc.contributor.author | Rest, Armin Wolfgang | |
dc.contributor.author | Ruel, J. | |
dc.contributor.author | Ruhl, J. E. | |
dc.contributor.author | Saliwanchik, B. R. | |
dc.contributor.author | Sayre, J. T. | |
dc.contributor.author | Schaffer, K. K. | |
dc.contributor.author | Shirokoff, E. | |
dc.contributor.author | Spieler, H. G. | |
dc.contributor.author | Stalder, Brian A | |
dc.contributor.author | Stanford, S. A. | |
dc.contributor.author | Staniszewski, Z. | |
dc.contributor.author | Stark, Antony A. | |
dc.contributor.author | Story, K. | |
dc.contributor.author | Stubbs, Christopher William | |
dc.contributor.author | Vanderlinde, K. | |
dc.contributor.author | Vieira, J. D. | |
dc.contributor.author | Vikhlinin, Alexey A. | |
dc.contributor.author | Williamson, R. | |
dc.contributor.author | Zahn, O. | |
dc.contributor.author | Zenteno, A. | |
dc.date.accessioned | 2015-07-02T19:21:16Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Bocquet, S., A. Saro, J. J. Mohr, K. A. Aird, M. L. N. Ashby, M. Bautz, M. Bayliss, et al. 2015. “Mass Calibration and Cosmological Analysis of the SPT-SZ Galaxy Cluster Sample Using Velocity Dispersion σ v and X-Ray Y X Measurements.” The Astrophysical Journal 799, no. 2: 214. doi:10.1088/0004-637x/799/2/214 | en_US |
dc.identifier.issn | 1538-4357 | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:16953382 | |
dc.description.abstract | We present a velocity-dispersion-based mass calibration of the South Pole Telescope Sunyaev-Zel'dovich effect survey (SPT-SZ) galaxy cluster sample. Using a homogeneously selected sample of 100 cluster candidates from 720 deg2 of the survey along with 63 velocity dispersion (σ v ) and 16 X-ray Y X measurements of sample clusters, we simultaneously calibrate the mass-observable relation and constrain cosmological parameters. Our method accounts for cluster selection, cosmological sensitivity, and uncertainties in the mass calibrators. The calibrations using σ v and Y X are consistent at the 0.6σ level, with the σ v calibration preferring ~16% higher masses. We use the full SPTCL data set (SZ clusters+σ v +Y X) to measure σ8(Ωm/0.27)0.3 = 0.809 ± 0.036 within a flat ΛCDM model. The SPT cluster abundance is lower than preferred by either the WMAP9 or Planck+WMAP9 polarization (WP) data, but assuming that the sum of the neutrino masses is ∑m ν = 0.06 eV, we find the data sets to be consistent at the 1.0σ level for WMAP9 and 1.5σ for Planck+WP. Allowing for larger ∑m ν further reconciles the results. When we combine the SPTCL and Planck+WP data sets with information from baryon acoustic oscillations and Type Ia supernovae, the preferred cluster masses are 1.9σ higher than the Y X calibration and 0.8σ higher than the σ v calibration. Given the scale of these shifts (~44% and ~23% in mass, respectively), we execute a goodness-of-fit test; it reveals no tension, indicating that the best-fit model provides an adequate description of the data. Using the multi-probe data set, we measure Ωm = 0.299 ± 0.009 and σ8 = 0.829 ± 0.011. Within a νCDM model we find ∑m ν = 0.148 ± 0.081 eV. We present a consistency test of the cosmic growth rate using SPT clusters. Allowing both the growth index γ and the dark energy equation-of-state parameter w to vary, we find γ = 0.73 ± 0.28 and w = –1.007 ± 0.065, demonstrating that the expansion and the growth histories are consistent with a ΛCDM universe (γ = 0.55; w = –1). | en_US |
dc.description.sponsorship | Astronomy | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | IOP Publishing | en_US |
dc.relation.isversionof | doi:10.1088/0004-637x/799/2/214 | en_US |
dash.license | OAP | |
dc.subject | cosmic background radiation | en_US |
dc.subject | cosmology: observations | en_US |
dc.subject | galaxies: clusters: individual | en_US |
dc.subject | large-scale structure of universe | en_US |
dc.title | Mass Calibration and Cosmological Analysis of the SPT-SZ Galaxy Cluster Sample Using Velocity Dispersion σ v and X-Ray Y X Measurements | en_US |
dc.type | Journal Article | en_US |
dc.description.version | Accepted Manuscript | en_US |
dc.relation.journal | The Astrophysical Journal | en_US |
dash.depositing.author | Stubbs, Christopher William | |
dc.date.available | 2015-07-02T19:21:16Z | |
dc.identifier.doi | 10.1088/0004-637x/799/2/214 | * |
dash.authorsordered | false | |
dash.contributor.affiliated | Ashby, Matthew | |
dash.contributor.affiliated | Bayliss, Matthew | |
dash.contributor.affiliated | Forman, William | |
dash.contributor.affiliated | Rest, Armin | |
dash.contributor.affiliated | Stalder, Brian | |
dash.contributor.affiliated | Viklinin, Alexey | |
dash.contributor.affiliated | Stark, Antony | |
dash.contributor.affiliated | Stubbs, Christopher | |