Dark energy survey year 3 results: weak lensing shape catalogue
Bacon, D.; Smith, M.; Davis, T. M.; Abbott, T. M. C.; Allam, S.; Annis, J.; Bertin, E.; Brooks, D.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Castander, F. J.; Crocce, M.; da Costa, L. N.; Desai, S.; Diehl, H. T.; Doel, P.; Frieman, J.; García-Bellido, J.; Gerdes, D. W.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Honscheid, K.; James, D. J.; Kuropatkin, N.; Lima, M.; Maia, M. A. G.; Marshall, J. L.; Miquel, R.; Plazas, A. A.; Rykoff, E. S.; Sanchez, E.; Scarpine, V.; Schubnell, M.; Sevilla-Noarbe, I.; Soares-Santos, M.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Choi, A.; Hollowood, D. L.; Bhargava, S.; Palmese, A.; Jeltema, T.; Aguena, M.; Avila, S.; Costanzi, M.; De Vicente, J.; Hartley, W. G.; Hinton, S. R.; Paz-Chinchón, F.; Roodman, A.; Serrano, S.; Thomas, D.; Varga, T. N.; Wilkinson, R. D.; Weller, J.; Tutusaus, I.; Dietrich, J. P.; Chang, C.; Drlica-Wagner, A.; Elvin-Poole, J.; Ferté, A.; Giannantonio, T.; Hoyle, B.; Huterer, D.; Jain, B.; Krause, E.; Rollins, R. P.; Samuroff, S.; Secco, L. F.; Wechsler, R. H.; Zuntz, J.; Conselice, C.; Everett, S.; Ferrero, I.; Gatti, M.; Morgan, R.; Prat, J.; To, C.; Tucker, D. L.; Harrison, I.; Wester, W.; Kron, R.; MacCrann, N.; Sheldon, E.; Jarvis, M.; Amon, A.; Huff, E. M.; Eckert, K.; Myles, J.; Chen, R.; Navarro-Alsina, A.; Pandey, S.; Bernstein, G.; Doux, C.; McCullough, J.; Shin, T.; Becker, M.; Troxel, M.; Sanchez, C.
Spain, United States, Brazil, United Kingdom, Chile, France, Italy, Australia, India, Germany, Norway, Switzerland
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.