Dark energy survey year 3 results: Weak lensing shape catalogue

M. Gatti, E. Sheldon, A. Amon, M. Becker, M. Troxel, A. Choi, C. Doux, N. MacCrann, A. Navarro-Alsina, I. Harrison, D. Gruen, G. Bernstein, M. Jarvis, L. F. Secco, A. Ferté, T. Shin, J. McCullough, R. P. Rollins, R. Chen, C. ChangS. Pandey, I. Tutusaus, J. Prat, J. Elvin-Poole, C. Sanchez, A. A. Plazas, A. Roodman, J. Zuntz, T. M.C. Abbott, M. Aguena, S. Allam, J. Annis, S. Avila, D. Bacon, E. Bertin, S. Bhargava, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. Conselice, M. Costanzi, M. Crocce, L. N. Da Costa, T. M. Davis, J. De Vicente, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, A. Drlica-Wagner, K. Eckert, S. Everett, I. Ferrero, J. Frieman, J. García-Bellido, D. W. Gerdes, T. Giannantonio, R. A. Gruendl, J. Gschwend, G. Gutierrez, W. G. Hartley, S. R. Hinton, D. L. Hollowood, K. Honscheid, B. Hoyle, E. M. Huff, D. Huterer, B. Jain, D. J. James, T. Jeltema, E. Krause, R. Kron, N. Kuropatkin, M. Lima, M. A.G. Maia, J. L. Marshall, R. Miquel, R. Morgan, J. Myles, A. Palmese, F. Paz-Chinchón, E. S. Rykoff, S. Samuroff, E. Sanchez, V. Scarpine, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, E. Suchyta, M. E.C. Swanson, G. Tarle, D. Thomas, C. To, D. L. Tucker, T. N. Varga, R. H. Wechsler, J. Weller, W. Wester, R. D. Wilkinson

Research output: Contribution to journalReview articlepeer-review

17 Scopus citations

Abstract

We present and characterize the galaxy shape catalogue from the first 3 yr of Dark Energy Survey (DES) observations, over an effective area of 4143 deg2 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 riz bands, resulting in a weighted source number density of neff = 5.59 gal arcmin-2 and corresponding shape noise σe = 0.261. 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.

Original languageEnglish (US)
Pages (from-to)4312-4336
Number of pages25
JournalMonthly Notices of the Royal Astronomical Society
Volume504
Issue number3
DOIs
StatePublished - Jul 1 2021
Externally publishedYes

Keywords

  • catalogues
  • cosmology: observations
  • gravitational lensing: weak
  • methods: data analysis
  • surveys
  • techniques: image processing

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'Dark energy survey year 3 results: Weak lensing shape catalogue'. Together they form a unique fingerprint.

Cite this