Dark Energy Survey Year 3 Results: Weak Lensing Shape Catalogue
Abstract
We present and characterise the galaxy shape catalogue from the first 3 years of Dark Energy Survey (DES) observations, over an effective area of ~4143 deg of the southern sky. We describe our data analysis process and our self-calibrating shear measurement pipeline METACALIBRATION, which builds and improves upon the pipeline used in the DES Year 1 analysis in several aspects. The DES Year 3 weak-lensing shape catalogue consists of 100,204,026 galaxies, measured in the bands, resulting in a weighted source number density of gal/arcmin and corresponding shape noise . We perform a battery of internal null tests on the catalogue, including tests on systematics related to the point-spread function (PSF) modelling, spurious catalogue B-mode signals, catalogue contamination, and galaxy properties.
Cite
@article{arxiv.2011.03408,
title = {Dark Energy Survey Year 3 Results: Weak Lensing Shape Catalogue},
author = {M. Gatti and E. Sheldon and A. Amon and M. Becker and M. Troxel and A. Choi and C. Doux and N. MacCrann and A. Navarro Alsina and I. Harrison and D. Gruen and G. Bernstein and M. Jarvis and L. F. Secco and A. Ferté and T. Shin and J. McCullough and R. P. Rollins and R. Chen and C. Chang and S. Pandey and I. Tutusaus and J. Prat and J. Elvin-Poole and C. Sanchez and A. A. Plazas and A. Roodman and J. Zuntz and T. M. C. Abbott and M. Aguena and S. Allam and J. Annis and S. Avila and D. Bacon and E. Bertin and S. Bhargava and D. Brooks and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and C. Conselice and M. Costanzi and L. N. da Costa and T. M. Davis and J. De Vicente and S. Desai and H. T. Diehl and J. P. Dietrich and P. Doel and A. Drlica-Wagner and K. Eckert and S. Everett and I. Ferrero and J. Frieman and J. García-Bellido and D. W. Gerdes and T. Giannantonio and R. A. Gruendl and J. Gschwend and G. Gutierrez and W. G. Hartley and S. R. Hinton and D. L. Hollowood and K. Honscheid and B. Hoyle and E. M. Huff and D. Huterer and B. Jain and D. J. James and T. Jeltema and E. Krause and R. Kron and N. Kuropatkin and O. Lahav and M. Lima and M. A. G. Maia and J. L. Marshall and R. Miquel and R. Morgan and J. Myles and A. Palmese and F. Paz-Chinchón and E. S. Rykoff and S. Samuroff and E. Sanchez and V. Scarpine and M. Schubnell and S. Serrano and I. Sevilla-Noarbe and M. Smith and E. Suchyta and M. E. C. Swanson and G. Tarle and D. Thomas and C. To and D. L. Tucker and T. N. Varga and R. H. Wechsler and J. Weller and W. Wester and R. D. Wilkinson},
journal= {arXiv preprint arXiv:2011.03408},
year = {2022}
}
Comments
Accepted by MNRAS. See https://www.darkenergysurvey.org/des-year-3-cosmology-results-papers/ for the full DES Y3 cosmology release