KiDS-Legacy: Consistency of cosmic shear measurements and joint cosmological constraints with external probes
We present a cosmic shear consistency analysis of the final data release from the Kilo-Degree Survey (KiDS-Legacy). By adopting three tiers of consistency metrics, we compared cosmological constraints between subsets of the KiDS-Legacy dataset split by redshift, angular scale, galaxy colour, and spatial region. We also reviewed a range of two-point cosmic shear statistics. As all the data passed our set of consistency metric tests, we demonstrate that KiDS-Legacy is the most internally consistent KiDS catalogue to date. In a joint cosmological analysis of KiDS-Legacy and DES Y3 cosmic shear, combined with data from the Pantheon+ Type Ia supernovae compilation and baryon acoustic oscillations from DESI Y1, we report constraints that are consistent with Planck measurements of the cosmic microwave background, with S 8 ≡ √ σ 8 Ω m /0.3 = 0.814 −0.012 +0.011 and σ 8 = 0.802 −0.018 +0.022 .
Authors
- Shangrong Li (ORCID: https://orcid.org/0000-0001-9952-7408)
- Giorgio Francesco Lesci
- M. Maturi (ORCID: https://orcid.org/0000-0002-3517-2422)
- Priyanka Jalan (ORCID: https://orcid.org/0000-0002-0524-5328)
- Catherine Heymans (ORCID: https://orcid.org/0000-0001-7023-3940)
- Constance Mahony (ORCID: https://orcid.org/0000-0002-1220-6028)
- M. Radovich (ORCID: https://orcid.org/0000-0002-3585-866X)
- Tilman Tröster (ORCID: https://orcid.org/0000-0003-3520-2406)
- L. Moscardini (ORCID: https://orcid.org/0000-0002-3473-6716)
- Mijin Yoon (ORCID: https://orcid.org/0000-0002-3683-9559)
- Maciej Bilicki (ORCID: https://orcid.org/0000-0002-3910-5809)
- Benjamin Joachimi (ORCID: https://orcid.org/0000-0001-7494-1303)
- Zi‐Ang Yan (ORCID: https://orcid.org/0000-0002-9592-0728)
- Shahab Joudaki (ORCID: https://orcid.org/0000-0001-8820-673X)
- H. Hildebrandt (ORCID: https://orcid.org/0000-0002-9814-3338)
- Henk Hoekstra (ORCID: https://orcid.org/0000-0002-0641-3231)
- Andrej Dvornik (ORCID: https://orcid.org/0000-0001-7415-1977)
- Maximilian von Wietersheim-Kramsta (ORCID: https://orcid.org/0000-0003-4986-5091)
- Christos Georgiou (ORCID: https://orcid.org/0000-0002-7950-6076)
- Nora Elisa Chisari (ORCID: https://orcid.org/0000-0003-4221-6718)
- R. Nicola Napolitano
- Anna Wittje (ORCID: https://orcid.org/0000-0002-8173-3438)
- E. A. Valentijn (ORCID: https://orcid.org/0000-0003-1032-6680)
- Konrad H. Kuijken (ORCID: https://orcid.org/0000-0002-3827-0175)
- Robert Reischke (ORCID: https://orcid.org/0000-0001-5404-8753)
- Pierre Burger
- Laila Linke (ORCID: https://orcid.org/0000-0002-2622-8113)
- Lucas Porth (ORCID: https://orcid.org/0000-0003-1176-6346)
- Marika Asgari (ORCID: https://orcid.org/0000-0002-3064-083X)
- Benjamin Giblin (ORCID: https://orcid.org/0000-0002-5031-3721)
- Joachim Harnois-Déraps (ORCID: https://orcid.org/0000-0002-4864-1240)
- Arthur Loureiro (ORCID: https://orcid.org/0000-0002-4371-0876)
- Yun-Hao Zhang (ORCID: https://orcid.org/0000-0003-4916-6346)
- Anjitha John William (ORCID: https://orcid.org/0000-0002-9720-9542)
- Benjamin Stölzner
- Helen Wright
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2025-09-01
- DOI
- https://doi.org/10.1051/0004-6361/202554893
- Citations
- 18
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 20.79
Funders
- National Science Foundation
- Smithsonian Institution
- U.S. Department of Energy
- National Aeronautics and Space Administration
- Alfred P. Sloan Foundation
- Gordon and Betty Moore Foundation
- Yale University
- Carnegie Institution of Washington
- Vanderbilt University
- University of Pennsylvania
- Ohio State University
- University of Chicago
- University of Michigan
- University of Utah
- University of Washington
- Johns Hopkins University
- Carnegie Mellon University
- University of Notre Dame
- University of Portsmouth
- New Mexico State University
- UK Research and Innovation
- York University
- University of Cambridge
- University College London
- University of Oxford
- University of Nottingham
- University of Sussex
- University of Edinburgh
- Deutsche Forschungsgemeinschaft
- National Natural Science Foundation of China
- Consejo Nacional de Ciencia y Tecnología
- Ministério da Ciência, Tecnologia e Inovação
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Knut och Alice Wallenbergs Stiftelse
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- Financiadora de Estudos e Projetos
- Ministerio de Ciencia e Innovación
- Universidad Nacional Autónoma de México
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives
- Institut de Física d'Altes Energies
- Max-Planck-Institut für Astrophysik
- Max-Planck-Institut für Astronomie
- Instituto de Astrofísica de Canarias
- University of Illinois at Urbana-Champaign
- Office of Science
- University of Colorado Boulder
- Science and Technology Facilities Council
- Leibniz-Gemeinschaft
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
- Division of Astronomical Sciences
- Integrated Electronics Engineering Center, Binghamton University
- Argonne National Laboratory
- Fermilab
- Lawrence Berkeley National Laboratory
- SLAC National Accelerator Laboratory