Dark Energy Survey year 3 results: point spread function modelling
Mike JarvisDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAG. M. BernsteinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAA. AmonKavli Institute for Particle Astrophysics and Cosmology, P.O. Box 2450, Stanford University, Stanford, CA 94305, USAC. DavisKavli Institute for Particle Astrophysics and Cosmology, P.O. Box 2450, Stanford University, Stanford, CA 94305, USAP.-F. LégetLaboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), CNRS/IN2P3, Sorbonne Université, F-75005, Paris, FranceK. BechtolPhysics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, WI 53706-1390, USAI. HarrisonJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKM. GattiInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) SpainA. RoodmanKavli Institute for Particle Astrophysics and Cosmology, P.O. Box 2450, Stanford University, Stanford, CA 94305, USAC. ChangDepartment of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USAR ChenDepartment of Physics, Duke University Durham, NC 27708, USAA. ChoiCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAS. DesaiDepartment of Physics, IIT Hyderabad, Kandi, Telangana 502285, IndiaA. Drlica-WagnerDepartment of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USAD. GruenDepartment of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USAR. A. GruendlDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAAudra K. HernándezDepartment of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USAN. MacCrannCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAJeffrey MeyersLawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USAA Navarro-AlsinaInstituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas, SP, BrazilShivam PandeyDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAA A PlazasDepartment of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USAL F SeccoDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAE. SheldonBrookhaven National Laboratory, Bldg 510, Upton, NY 11973, USAM. A. TroxelDepartment of Physics, Duke University Durham, NC 27708, USAS VorperianK WeiKavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USAJ. ZuntzInstitute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, UKT. M. C. AbbottCerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, Casilla 603, La Serena, ChileM. AguenaDepartamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, BrazilS. AllamFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAS. ÀvilaInstituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, SpainS BhargavaDepartment of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UKS. L. BridleJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKDavid BrooksDepartment of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UKA. Carnero RosellDepartmeno Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, SpainM. Carrasco KindDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAJ. CarreteroInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) SpainM. CostanziINAF – Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, I-34143 Trieste, ItalyL. N. da CostaLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilJ. De VicenteCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainH. T. DiehlFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAP. DoelDepartment of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UKS. EverettB. FlaugherFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAP. FosalbaInstitut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, SpainJ. FriemanFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAJ. García-BellidoInstituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, SpainE. GaztañagaInstitut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, SpainD. W. GerdesDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAG. GutiérrezFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAS. R. HintonSchool of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, AustraliaD L HollowoodK. HonscheidCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAD. J. JamesCenter for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USAS. KentFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAK. KuehnAustralian Astronomical Optics, Macquarie University, North Ryde, NSW 2113, AustraliaN. KuropatkinFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAO. LahavDepartment of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UKM. A. G. MaiaLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilM. MarchDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAJ. L. MarshallGeorge P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USAP. MelchiorDepartment of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USAF. MenanteauDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAR. MiquelInstitució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, SpainR. L. C. OgandoLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilF. Paz-ChinchónInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UKE. S. RykoffKavli Institute for Particle Astrophysics and Cosmology, P.O. Box 2450, Stanford University, Stanford, CA 94305, USAE. SánchezCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainV. ScarpineFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAM. SchubnellDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAS. SerranoInstitut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, SpainI. Sevilla-NoarbeCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainM. SmithSchool of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UKE. SuchytaComputer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAM. E. C. SwansonNational Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USAG. TarléDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAT N VargaFakultät für Physik, Ludwig-Maximilians Universität München, Universitäts-Sternwarte, Scheinerstr. 1, D-81679 München, GermanyA. R. WalkerCerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, Casilla 603, La Serena, ChileW. C. WesterFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAR. D. WilkinsonDepartment of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK
2020en
ABI
Abstract
ABSTRACT We introduce a new software package for modelling the point spread function (PSF) of astronomical images, called piff (PSFs In the Full FOV), which we apply to the first three years (known as Y3) of the Dark Energy Survey (DES) data. We describe the relevant details about the algorithms used by piff to model the PSF, including how the PSF model varies across the field of view (FOV). Diagnostic results show that the systematic errors from the PSF modelling are very small over the range of scales that are important for the DES Y3 weak lensing analysis. In particular, the systematic errors from the PSF modelling are significantly smaller than the corresponding results from the DES year one (Y1) analysis. We also briefly describe some planned improvements to piff that we expect to further reduce the modelling errors in future analyses.
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