Issue |
A&A
Volume 681, January 2024
|
|
---|---|---|
Article Number | A87 | |
Number of page(s) | 12 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361/202346712 | |
Published online | 22 January 2024 |
ACT-DR5 Sunyaev-Zel’dovich clusters: Weak lensing mass calibration with KiDS
1
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
e-mail: naomi.robertson@ed.ac.uk
2
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
3
Kavli Institute for Cosmology Cambridge, Madingley Road, Cambridge CB3 0HA, UK
4
Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile
5
E.A. Milne Centre, University of Hull, Cottingham Road, Hull HU6 7RX, UK
6
Centre of Excellence for Data Science, AI, and Modelling (DAIM), University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, UK
7
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
8
Center for Theoretical Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
9
Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George St., Toronto, ON M5S 3H8, Canada
10
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USA
11
Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544, USA
12
Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544, USA
13
Instituto de Ciencias del Cosmos (ICC), Universidad de Barcelona, Martí i Franquès, 1, 08028 Barcelona, Spain
14
Ruhr University Bochum, Faculty of Physics and Astronomy, Astronomical Institute (AIRUB), German Centre for Cosmological Lensing, 44780 Bochum, Germany
15
Wits Centre for Astrophysics, School of Physics, University of the Witwatersrand, 2050 Johannesburg, South Africa
16
Astrophysics Research Centre and School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, KwaZulu-Natal, Durban, South Africa
17
Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
18
Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854, USA
19
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
20
Department of Astronomy and Astrophysics, University of Chicago, 5640 S Ellis Ave, Chicago, IL 60637, USA
21
Department of Physics and Astronomy, Haverford College, 370 Lancaster Avenue, Haverford, PA 19041, USA
22
INAF – Osservatorio Astronomico di Padova, Via dell’Osservatorio 5, 35122 Padova, Italy
23
Argelander-Institut f. Astronomie, Univ. Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
24
Shanghai Astronomical Observatory (SHAO), Nandan Road 80, Shanghai 200030, PR China
25
University of Chinese Academy of Sciences, Beijing 100049, PR China
26
Center for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USA
27
Institute for Particle Physics and Astrophysics, ETH Zürich, Wolfgang-Pauli-Strasse 27, 8093 Zürich, Switzerland
28
NASA Goddard Space Flight Center, 8800 Greenbelt Rd, Greenbelt, MD 20771, USA
29
Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Fìsica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
Received:
20
April
2023
Accepted:
18
October
2023
We present Weak Gravitational Lensing measurements of a sample of 157 clusters within the Kilo Degree Survey (KiDS), detected with a > 5σ thermal Sunyaev-Zel’dovich (SZ) signal by the Atacama Cosmology Telescope (ACT). Using a halo-model approach, we constrained the average total cluster mass, MWL, accounting for the ACT cluster selection function of the full sample. We find that the SZ cluster mass estimate MSZ, which was calibrated using X-ray observations, is biased with MSZ/MWL = (1 − bSZ) = 0.65 ± 0.05. Separating the sample into six mass bins, we find no evidence of a strong mass dependency for the mass bias, (1 − bSZ). Adopting this ACT-KiDS SZ mass calibration would bring the Planck SZ cluster count into agreement with the counts expected from the Planck cosmic microwave background ΛCDM cosmological model, although it should be noted that the cluster sample considered in this work has a lower average mass MSZ, uncor = 3.64 × 1014 M⊙ compared to the Planck cluster sample which has an average mass in the range MSZ, uncor = (5.5 − 8.5)×1014 M⊙, depending on the sub-sample used.
Key words: gravitational lensing: weak / large-scale structure of Universe / cosmology: observations
© The Authors 2024
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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