Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey
International audience We study the Sunyaev–Zel'dovich effect (SZE) signature in South Pole Telescope (SPT) data for an ensemble of 719 optically identified galaxy clusters selected from 124.6 deg^2 of the Dark Energy Survey (DES) science verification data, detecting a clear stacked SZE signal...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.archives-ouvertes.fr/hal-01582363 https://doi.org/10.1093/mnras/stx594 |
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ftccsdartic:oai:HAL:hal-01582363v1 2023-05-15T18:23:21+02:00 Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey Saro, A. Bocquet, S. Mohr, J. ROZO, E. Benson, B.A. Dodelson, S. Rykoff, E.S. Bleem, L. Abbott, T.M.C. Abdalla, F.B. Allen, S. Annis, J. Benoit-Levy, A. Brooks, D. Burke, D.L. Capasso, R. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Chiu, I. Crawford, T.M. Cunha, C.E. D'Andrea, C.B. Da Costa, L.N. Desai, S. Dietrich, J.P. Evrard, A.E. Neto, A.Fausti Flaugher, B. Fosalba, P. Frieman, J. Gangkofner, C. Gaztanaga, E. Gerdes, D.W. Giannantonio, T. Grandis, S. Gruen, D. Gruendl, R.A. Gupta, N. Gutierrez, G. Holzapfel, W.L. James, D.J. Kuehn, K. Kuropatkin, N. Lima, M. Marshall, J.L. Mcdonald, M. Melchior, P. Menanteau, F. Miquel, R. Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2017 https://hal.archives-ouvertes.fr/hal-01582363 https://doi.org/10.1093/mnras/stx594 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/1605.08770 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx594 hal-01582363 https://hal.archives-ouvertes.fr/hal-01582363 ARXIV: 1605.08770 doi:10.1093/mnras/stx594 INSPIRE: 1466121 Mon.Not.Roy.Astron.Soc. https://hal.archives-ouvertes.fr/hal-01582363 Mon.Not.Roy.Astron.Soc., 2017, 468 (3), pp.3347-3360. ⟨10.1093/mnras/stx594⟩ large-scale structure of Universe galaxies: clusters: general galaxies: abundances methods: observational methods: statistical [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2017 ftccsdartic https://doi.org/10.1093/mnras/stx594 2021-12-19T02:32:45Z International audience We study the Sunyaev–Zel'dovich effect (SZE) signature in South Pole Telescope (SPT) data for an ensemble of 719 optically identified galaxy clusters selected from 124.6 deg^2 of the Dark Energy Survey (DES) science verification data, detecting a clear stacked SZE signal down to richness λ ∼ 20. The SZE signature is measured using matched-filtered maps of the 2500 deg^2 SPT-SZ survey at the positions of the DES clusters, and the degeneracy between SZE observable and matched-filter size is broken by adopting as priors SZE and optical mass–observable relations that are either calibrated using SPT-selected clusters or through the Arnaud et al. (A10) X-ray analysis. We measure the SPT signal-to-noise ζ–λ relation and two integrated Compton-yY_500–λ relations for the DES-selected clusters and compare these to model expectations that account for the SZE–optical centre offset distribution. For clusters with λ > 80, the two SPT-calibrated scaling relations are consistent with the measurements, while for the A10-calibrated relation the measured SZE signal is smaller by a factor of 0.61 ± 0.12 compared to the prediction. For clusters at 20 < λ < 80, the measured SZE signal is smaller by a factor of ∼0.20–0.80 (between 2.3σ and 10σ significance) compared to the prediction, with the SPT-calibrated scaling relations and larger λ clusters showing generally better agreement. We quantify the required corrections to achieve consistency, showing that there is a richness-dependent bias that can be explained by some combination of (1) contamination of the observables and (2) biases in the estimated halo masses. We also discuss particular physical effects associated with these biases, such as contamination of λ from line-of-sight projections or of the SZE observables from point sources, larger offsets in the SZE-optical centring or larger intrinsic scatter in the λ–mass relation at lower richnesses. Article in Journal/Newspaper South pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) South Pole Monthly Notices of the Royal Astronomical Society 468 3 3347 3360 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
large-scale structure of Universe galaxies: clusters: general galaxies: abundances methods: observational methods: statistical [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
large-scale structure of Universe galaxies: clusters: general galaxies: abundances methods: observational methods: statistical [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Saro, A. Bocquet, S. Mohr, J. ROZO, E. Benson, B.A. Dodelson, S. Rykoff, E.S. Bleem, L. Abbott, T.M.C. Abdalla, F.B. Allen, S. Annis, J. Benoit-Levy, A. Brooks, D. Burke, D.L. Capasso, R. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Chiu, I. Crawford, T.M. Cunha, C.E. D'Andrea, C.B. Da Costa, L.N. Desai, S. Dietrich, J.P. Evrard, A.E. Neto, A.Fausti Flaugher, B. Fosalba, P. Frieman, J. Gangkofner, C. Gaztanaga, E. Gerdes, D.W. Giannantonio, T. Grandis, S. Gruen, D. Gruendl, R.A. Gupta, N. Gutierrez, G. Holzapfel, W.L. James, D.J. Kuehn, K. Kuropatkin, N. Lima, M. Marshall, J.L. Mcdonald, M. Melchior, P. Menanteau, F. Miquel, R. Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey |
topic_facet |
large-scale structure of Universe galaxies: clusters: general galaxies: abundances methods: observational methods: statistical [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience We study the Sunyaev–Zel'dovich effect (SZE) signature in South Pole Telescope (SPT) data for an ensemble of 719 optically identified galaxy clusters selected from 124.6 deg^2 of the Dark Energy Survey (DES) science verification data, detecting a clear stacked SZE signal down to richness λ ∼ 20. The SZE signature is measured using matched-filtered maps of the 2500 deg^2 SPT-SZ survey at the positions of the DES clusters, and the degeneracy between SZE observable and matched-filter size is broken by adopting as priors SZE and optical mass–observable relations that are either calibrated using SPT-selected clusters or through the Arnaud et al. (A10) X-ray analysis. We measure the SPT signal-to-noise ζ–λ relation and two integrated Compton-yY_500–λ relations for the DES-selected clusters and compare these to model expectations that account for the SZE–optical centre offset distribution. For clusters with λ > 80, the two SPT-calibrated scaling relations are consistent with the measurements, while for the A10-calibrated relation the measured SZE signal is smaller by a factor of 0.61 ± 0.12 compared to the prediction. For clusters at 20 < λ < 80, the measured SZE signal is smaller by a factor of ∼0.20–0.80 (between 2.3σ and 10σ significance) compared to the prediction, with the SPT-calibrated scaling relations and larger λ clusters showing generally better agreement. We quantify the required corrections to achieve consistency, showing that there is a richness-dependent bias that can be explained by some combination of (1) contamination of the observables and (2) biases in the estimated halo masses. We also discuss particular physical effects associated with these biases, such as contamination of λ from line-of-sight projections or of the SZE observables from point sources, larger offsets in the SZE-optical centring or larger intrinsic scatter in the λ–mass relation at lower richnesses. |
author2 |
Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Saro, A. Bocquet, S. Mohr, J. ROZO, E. Benson, B.A. Dodelson, S. Rykoff, E.S. Bleem, L. Abbott, T.M.C. Abdalla, F.B. Allen, S. Annis, J. Benoit-Levy, A. Brooks, D. Burke, D.L. Capasso, R. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Chiu, I. Crawford, T.M. Cunha, C.E. D'Andrea, C.B. Da Costa, L.N. Desai, S. Dietrich, J.P. Evrard, A.E. Neto, A.Fausti Flaugher, B. Fosalba, P. Frieman, J. Gangkofner, C. Gaztanaga, E. Gerdes, D.W. Giannantonio, T. Grandis, S. Gruen, D. Gruendl, R.A. Gupta, N. Gutierrez, G. Holzapfel, W.L. James, D.J. Kuehn, K. Kuropatkin, N. Lima, M. Marshall, J.L. Mcdonald, M. Melchior, P. Menanteau, F. Miquel, R. |
author_facet |
Saro, A. Bocquet, S. Mohr, J. ROZO, E. Benson, B.A. Dodelson, S. Rykoff, E.S. Bleem, L. Abbott, T.M.C. Abdalla, F.B. Allen, S. Annis, J. Benoit-Levy, A. Brooks, D. Burke, D.L. Capasso, R. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Chiu, I. Crawford, T.M. Cunha, C.E. D'Andrea, C.B. Da Costa, L.N. Desai, S. Dietrich, J.P. Evrard, A.E. Neto, A.Fausti Flaugher, B. Fosalba, P. Frieman, J. Gangkofner, C. Gaztanaga, E. Gerdes, D.W. Giannantonio, T. Grandis, S. Gruen, D. Gruendl, R.A. Gupta, N. Gutierrez, G. Holzapfel, W.L. James, D.J. Kuehn, K. Kuropatkin, N. Lima, M. Marshall, J.L. Mcdonald, M. Melchior, P. Menanteau, F. Miquel, R. |
author_sort |
Saro, A. |
title |
Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey |
title_short |
Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey |
title_full |
Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey |
title_fullStr |
Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey |
title_full_unstemmed |
Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey |
title_sort |
optical–sze scaling relations for des optically selected clusters within the spt-sz survey |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01582363 https://doi.org/10.1093/mnras/stx594 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Mon.Not.Roy.Astron.Soc. https://hal.archives-ouvertes.fr/hal-01582363 Mon.Not.Roy.Astron.Soc., 2017, 468 (3), pp.3347-3360. ⟨10.1093/mnras/stx594⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1605.08770 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx594 hal-01582363 https://hal.archives-ouvertes.fr/hal-01582363 ARXIV: 1605.08770 doi:10.1093/mnras/stx594 INSPIRE: 1466121 |
op_doi |
https://doi.org/10.1093/mnras/stx594 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
468 |
container_issue |
3 |
container_start_page |
3347 |
op_container_end_page |
3360 |
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1766202931220054016 |