학술논문
SPT-SZ MCMF: An extension of the SPT-SZ catalog over the DES region
Document Type
Working Paper
Author
Klein, M.; Mohr, J. J.; Bocquet, S.; Aguena, M.; Allen, S. W.; Alves, O.; Ansarinejad, B.; Ashby, M. L. N.; Bacon, D.; Bayliss, M.; Benson, B. A.; Bleem, L. E.; Brodwin, M.; Brooks, D.; Bulbul, E.; Burke, D. L.; Canning, R. E. A.; Carlstrom, J. E.; Rosell, A. Carnero; Carretero, J.; Chang, C. L.; Conselice, C.; Costanzi, M.; Crites, A. T.; da Costa, L. N.; Pereira, M. E. S.; Davis, T. M.; De Vicente, J.; Desai, S.; de Haan, T.; Dobbs, M. A.; Doel, P.; Ferrero, I.; Flores, A. M.; Frieman, J.; George, E. M.; Giannini, G.; Gladders, M. D.; Gonzalez, A. H.; Grandis, S.; Gruen, D.; Gruendl, R. A.; Gutierrez, G.; Halverson, N. W.; Hinton, S. R.; Holder, G. P.; Hollowood, D. L.; Holzapfel, W. L.; Honscheid, K.; Hrubes, J. D.; Huang, N.; James, D. J.; Khullar, G.; Kim, K.; Knox, L.; Kraft, R.; Kéruzoré, F.; Lee, A. T.; Luong-Van, D.; Mahler, G.; Mantz, A.; Marrone, D. P.; Marshall, J. L.; McDonald, M.; McMahon, J. J.; Mena-Fernández, J.; Menanteau, F.; Meyer, S. S.; Miquel, R.; Myles, J.; Padin, S.; Pieres, A.; Malagón, A. A. Plazas; Pryke, C.; Reichardt, C. L.; Reil, K.; Roberson, J.; Romer, A. K.; Romero, C.; Ruhl, J. E.; Saliwanchik, B. R.; Salvati, L.; Sanchez, E.; Saro, A.; Schaffer, K. K.; Schrabback, T.; Schubnell, M.; Sevilla-Noarbe, I.; Sharon, K.; Shirokoff, E.; Smith, M.; Somboonpanyakul, T.; Stalder, B.; Stanford, S. A.; Stark, A. A.; Strazzullo, V.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; To, C.; Vanderlinde, K.; Vieira, J. D.; von der Linden, A.; Weaverdyck, N.; Williamson, R.; Wiseman, P.; Young, M.
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Subject
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Abstract
We present an extension to a Sunyaev-Zel'dovich Effect (SZE) selected cluster catalog based on observations from the South Pole Telescope (SPT); this catalog extends to lower signal-to-noise than the previous SPT-SZ catalog and therefore includes lower mass clusters. Optically derived redshifts, centers, richnesses and morphological parameters together with catalog contamination and completeness statistics are extracted using the multi-component matched filter algorithm (MCMF) applied to the S/N>4 SPT-SZ candidate list and the Dark Energy Survey (DES) photometric galaxy catalog. The main catalog contains 811 sources above S/N=4, has 91% purity and is 95% complete with respect to the original SZE selection. It contains 50% more total clusters and twice as many clusters above z=0.8 in comparison to the original SPT-SZ sample. The MCMF algorithm allows us to define subsamples of the desired purity with traceable impact on catalog completeness. As an example, we provide two subsamples with S/N>4.25 and S/N>4.5 for which the sample contamination and cleaning-induced incompleteness are both as low as the expected Poisson noise for samples of their size. The subsample with S/N>4.5 has 98% purity and 96% completeness, and will be included in a combined SPT cluster and DES weak-lensing cosmological analysis. We measure the number of false detections in the SPT-SZ candidate list as function of S/N, finding that it follows that expected from assuming Gaussian noise, but with a lower amplitude compared to previous estimates from simulations.
Comment: 16 pages, 17 figures, submitted to MNRAS
Comment: 16 pages, 17 figures, submitted to MNRAS