Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ...
We present weak-lensing (WL) mass constraints for a sample of massive galaxy clusters detected by the South Pole Telescope (SPT) via the Sunyaev–Zel’dovich effect (SZE). We use griz imaging data obtained from the Science Verification (SV) phase of the Dark Energy Survey (DES) to fit the WL shear sig...
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Online Access: | https://dx.doi.org/10.3929/ethz-b-000343601 http://hdl.handle.net/20.500.11850/343601 |
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ftdatacite:10.3929/ethz-b-000343601 2024-04-28T08:38:50+00:00 Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... DES and SPT Collaborations Stern, C. Kacprzak, Tomasz et al. 2019 application/pdf https://dx.doi.org/10.3929/ethz-b-000343601 http://hdl.handle.net/20.500.11850/343601 en eng ETH Zurich gravitational lensing weak galaxies clusters general cosmology observations article-journal Text ScholarlyArticle Journal Article 2019 ftdatacite https://doi.org/10.3929/ethz-b-000343601 2024-04-02T12:32:08Z We present weak-lensing (WL) mass constraints for a sample of massive galaxy clusters detected by the South Pole Telescope (SPT) via the Sunyaev–Zel’dovich effect (SZE). We use griz imaging data obtained from the Science Verification (SV) phase of the Dark Energy Survey (DES) to fit the WL shear signal of 33 clusters in the redshift range 0.25 ≤ z ≤ 0.8 with NFW profiles and to constrain a four-parameter SPT mass–observable relation. To account for biases in WL masses, we introduce a WL mass to true mass scaling relation described by a mean bias and an intrinsic, lognormal scatter. We allow for correlated scatter within the WL and SZE mass–observable relations and use simulations to constrain priors on nuisance parameters related to bias and scatter from WL. We constrain the normalization of the ζ−M₅₀₀ relation, A_SZ=12.0₋₆.₇⁺².⁶ when using a prior on the mass slope BSZ from the latest SPT cluster cosmology analysis. Without this prior, we recover ASZ=10.8₋₅.₂⁺².³ and BSZ=1.30₋₀.₄₄⁺⁰.²². Results in both ... : Monthly Notices of the Royal Astronomical Society, 485 (1) ... Article in Journal/Newspaper South pole DataCite Metadata Store (German National Library of Science and Technology) |
institution |
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collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
English |
topic |
gravitational lensing weak galaxies clusters general cosmology observations |
spellingShingle |
gravitational lensing weak galaxies clusters general cosmology observations DES and SPT Collaborations Stern, C. Kacprzak, Tomasz et al. Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... |
topic_facet |
gravitational lensing weak galaxies clusters general cosmology observations |
description |
We present weak-lensing (WL) mass constraints for a sample of massive galaxy clusters detected by the South Pole Telescope (SPT) via the Sunyaev–Zel’dovich effect (SZE). We use griz imaging data obtained from the Science Verification (SV) phase of the Dark Energy Survey (DES) to fit the WL shear signal of 33 clusters in the redshift range 0.25 ≤ z ≤ 0.8 with NFW profiles and to constrain a four-parameter SPT mass–observable relation. To account for biases in WL masses, we introduce a WL mass to true mass scaling relation described by a mean bias and an intrinsic, lognormal scatter. We allow for correlated scatter within the WL and SZE mass–observable relations and use simulations to constrain priors on nuisance parameters related to bias and scatter from WL. We constrain the normalization of the ζ−M₅₀₀ relation, A_SZ=12.0₋₆.₇⁺².⁶ when using a prior on the mass slope BSZ from the latest SPT cluster cosmology analysis. Without this prior, we recover ASZ=10.8₋₅.₂⁺².³ and BSZ=1.30₋₀.₄₄⁺⁰.²². Results in both ... : Monthly Notices of the Royal Astronomical Society, 485 (1) ... |
format |
Article in Journal/Newspaper |
author |
DES and SPT Collaborations Stern, C. Kacprzak, Tomasz et al. |
author_facet |
DES and SPT Collaborations Stern, C. Kacprzak, Tomasz et al. |
author_sort |
DES and SPT Collaborations |
title |
Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... |
title_short |
Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... |
title_full |
Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... |
title_fullStr |
Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... |
title_full_unstemmed |
Weak-lensing analysis of SPT-selected galaxy clusters using Dark Energy Survey Science Verification data ... |
title_sort |
weak-lensing analysis of spt-selected galaxy clusters using dark energy survey science verification data ... |
publisher |
ETH Zurich |
publishDate |
2019 |
url |
https://dx.doi.org/10.3929/ethz-b-000343601 http://hdl.handle.net/20.500.11850/343601 |
genre |
South pole |
genre_facet |
South pole |
op_doi |
https://doi.org/10.3929/ethz-b-000343601 |
_version_ |
1797570099628998656 |