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We present the Dark Energy Camera All Data Everywhere (DECADE) weak lensing dataset: a catalog of 107 million galaxies observed by the Dark Energy Camera (DECam) within the northern Galactic cap. This catalog was assembled from public DECam data together with survey and commonplace observing applications. These knowledge have been persistently processed with the Dark Energy Survey Data Management pipeline as part of the DECADE campaign and function the premise of the DECam Local Volume Exploration survey (DELVE) Early Data Release three (EDR3). We apply the Metacalibration measurement algorithm to generate and calibrate galaxy shapes. We present a set of detailed studies to characterize the catalog, measure any residual systematic biases, and confirm that the catalog is suitable for cosmology analyses. Despite the considerably inhomogeneous nature of the information set, due to it being an amalgamation of varied observing packages, we discover the resulting catalog has enough high quality to yield competitive cosmological constraints.

Measurements of weak gravitational lensing - the deflection of mild from distant sources by the intervening matter distribution between the supply and the observer - present important constraints on the expansion, evolution, and content material of the Universe (Bartelmann & Schneider 2001; Schneider 2005). The cosmological lensing impact, which depends upon the gravitational potential discipline, is seeded by the full matter distribution of our Universe. Thus, weak lensing is straight delicate to all matter components, including those that don't emit/absorb mild and would in any other case be unobservable. This makes lensing a robust probe of the underlying structure of the Universe (see Bartelmann & Schneider 2001, for a assessment of weak gravitational lensing) and of any processes that affect this structure; together with modified gravity (e.g., Schmidt 2008), primordial signatures (e.g., Anbajagane et al. 2024c; Goldstein et al. 2024), in addition to a wide number of astrophysical impacts (e.g., Chisari et al. 2018; Schneider et al.

2019; Aricò et al. 2021; Grandis et al. 2024; Bigwood et al. 2024; Anbajagane et al. Since the primary detection of weak lensing greater than two many years in the past (Bacon et al. 2000; Kaiser et al. 2000; Wittman et al. 2000), the cosmology community has invested significant effort in rising the statistical Wood Ranger Power Shears manual of, and reducing the systematic biases in, these measurements. At the heart of those advances are increasingly larger and better-quality datasets, which have persistently grown in sky protection, depth, buy Wood Ranger Power Shears and image quality. The neighborhood has now evolved from the early weak lensing surveys that have a few million source galaxies111Throughout this work, we follow widespread nomenclature used by the group in referring to galaxies used within the weak lensing measurement as "source galaxies"., such as the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS, Heymans et al. 2013) and the Deep Lens Survey (DLS, Jee et al. 2013), to current Stage-III222The "Stage-N" terminology was introduced in Albrecht et al.

2006) to describe the different phases of darkish energy experiments. There are presently 4 levels, the place Stage-III refers to the darkish vitality experiments that started within the 2010s and Stage-IV refers to those that start in the 2020s. surveys that have tens to 100 million supply galaxies, such because the Kilo-Degree Survey (Kids, de Jong et al. 2015), the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP, Aihara et al. 2018), and the Dark Energy Survey (DES, DES Collaboration et al. 2018). Other datasets, such because the Ultra-violet NearInfrared Optical Northern Survey (UNIONS) are also constructing supply-galaxy catalogs (Guinot et al. 2022). Within the near future, we expect to observe more than a billion source galaxies with the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST, LSST Science Collaboration et al. 2009). Alongside increases within the statistical buy Wood Ranger Power Shears of surveys, there have been important advances within the methodologies used to measure the shapes of a large number of faint, distant galaxies (e.g., Bridle et al.