Masses of Sunyaev-Zel’dovich galaxy clusters detected by the Atacama Cosmology Telescope: Stacked lensing measurements with Subaru HSC year 3 data

We present a stacked lensing analysis of 96 galaxy clusters selected by the thermal Sunyaev-Zel'dovich (SZ) effect in maps of the cosmic microwave background (CMB). We select foreground galaxy clusters with a $5\ensuremath{\sigma}$-level SZ threshold in CMB observations from the Atacama Cosmology Telescope, while we define background source galaxies for the lensing analysis with secure photometric redshift cuts in Year 3 data of the Subaru Hyper Suprime Cam survey. We detect the stacked lensing signal in the range of $0.1<R[{h}^{\ensuremath{-}1}\text{ }\mathrm{Mpc}]<100$ in each of three cluster redshift bins, $0.092<z\ensuremath{\le}0.445$, $0.445<z\ensuremath{\le}0.695$, and $0.695<z\ensuremath{\le}1.180$, with 32 galaxy clusters in each bin. The cumulative signal-to-noise ratios of the lensing signal are 14.6, 12.0, and 6.6, respectively. Using a halo-based forward model, we then constrain statistical relationships between the mass inferred from the SZ observation (i.e. SZ mass) and the total mass derived from our stacked lensing measurements. At the average SZ mass in the cluster sample ($2.1\ensuremath{-}2.4\ifmmode\times\else\texttimes\fi{}{10}^{14}{h}^{\ensuremath{-}1}{M}_{\ensuremath{\bigodot}}$), our likelihood analysis shows that the average total mass differs from the SZ counterpart by a factor of $1.3\ifmmode\pm\else\textpm\fi{}0.2$, $1.6\ifmmode\pm\else\textpm\fi{}0.2$, and $1.6\ifmmode\pm\else\textpm\fi{}0.3$ (68%) in the aforementioned redshift ranges, respectively. Our limits are consistent with previous lensing measurements, and we find that the cluster modeling choices can introduce a $1\ensuremath{\sigma}$-level difference in our parameter inferences.

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Journal
Physical review. D/Physical review. D.
Published
2024-11-08
DOI
https://doi.org/10.1103/physrevd.110.103006
Citations
4
Primary Topic
Astronomy and Astrophysical Research
Type
article
Field-Weighted Citation Impact
2.03
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article

Masses of Sunyaev-Zel’dovich galaxy clusters detected by the Atacama Cosmology Telescope: Stacked lensing measurements with Subaru HSC year 3 data

Yen‐Ting Lin, Erwin T. Lau, Daisuke Nagai, Jo Dunkley et al.
4 citations
Physical review. D/Physical review. D.
Astronomy and Astrophysical Research
2.03
article

Masses of Sunyaev-Zel’dovich galaxy clusters detected by the Atacama Cosmology Telescope: Stacked lensing measurements with Subaru HSC year 3 data

Yen‐Ting Lin, Erwin T. Lau, Daisuke Nagai, Jo Dunkley, Neta A. Bahcall, Michelle Devlin, Matt Hilton, Hironao Miyatake, Suzanne T. Staggs, Zhuowen Zhang, Masato Shirasaki, Cristobál Sifón, Arya Farahi, Tomomi Sunayama, Nicholas Battaglia, Edward J. Wollack, David N. Spergel
article en
4 citations

Abstract

We present a stacked lensing analysis of 96 galaxy clusters selected by the thermal Sunyaev-Zel'dovich (SZ) effect in maps of the cosmic microwave background (CMB). We select foreground galaxy clusters with a $5\ensuremath{\sigma}$-level SZ threshold in CMB observations from the Atacama Cosmology Telescope, while we define background source galaxies for the lensing analysis with secure photometric redshift cuts in Year 3 data of the Subaru Hyper Suprime Cam survey. We detect the stacked lensing signal in the range of $0.1<R[{h}^{\ensuremath{-}1}\text{ }\mathrm{Mpc}]<100$ in each of three cluster redshift bins, $0.092<z\ensuremath{\le}0.445$, $0.445<z\ensuremath{\le}0.695$, and $0.695<z\ensuremath{\le}1.180$, with 32 galaxy clusters in each bin. The cumulative signal-to-noise ratios of the lensing signal are 14.6, 12.0, and 6.6, respectively. Using a halo-based forward model, we then constrain statistical relationships between the mass inferred from the SZ observation (i.e. SZ mass) and the total mass derived from our stacked lensing measurements. At the average SZ mass in the cluster sample ($2.1\ensuremath{-}2.4\ifmmode\times\else\texttimes\fi{}{10}^{14}{h}^{\ensuremath{-}1}{M}_{\ensuremath{\bigodot}}$), our likelihood analysis shows that the average total mass differs from the SZ counterpart by a factor of $1.3\ifmmode\pm\else\textpm\fi{}0.2$, $1.6\ifmmode\pm\else\textpm\fi{}0.2$, and $1.6\ifmmode\pm\else\textpm\fi{}0.3$ (68%) in the aforementioned redshift ranges, respectively. Our limits are consistent with previous lensing measurements, and we find that the cluster modeling choices can introduce a $1\ensuremath{\sigma}$-level difference in our parameter inferences.

Physical review. D/Physical review. D.Vol. 110(10)
Obayashi (Japan) (JP), Pontificia Universidad Católica de Valparaíso (CL), Goddard Space Flight Center (US), Institute of Astronomy and Astrophysics, Academia Sinica (TW), Fermi National Accelerator Laboratory (US), Harvard University (US), University of Arizona (US), Kavli Institute for the Physics and Mathematics of the Universe (JP), University of the Witwatersrand (ZA), Princeton University (US), Cornell University (US), Yale University (US), California University of Pennsylvania (US), University of Chicago (US), Simons Foundation (US), Center for Astrophysics Harvard & Smithsonian (US), The Institute of Statistical Mathematics (JP), Nagoya Municipal Industrial Research Institute (JP), Flatiron Health (United States) (US), National Astronomical Observatory of Japan (JP), Flatiron Institute (US), Nagoya University (JP), University of Pennsylvania (US), The University of Texas at Austin (US), Netherlands Institute for Radio Astronomy (NL), University of KwaZulu-Natal (ZA)
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Astronomy and Astrophysical Research
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