1. Dark Energy Survey year 3 results: point spread function modelling
- Author
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Alex Drlica-Wagner, A. Hernandez, David J. James, Pablo Fosalba, Michael Schubnell, V. Scarpine, M. March, Sarah Bridle, Santiago Avila, Chihway Chang, A. Navarro-Alsina, S. Kent, S. Desai, R. D. Wilkinson, C. Davis, Samuel Hinton, Erin Sheldon, Josh Frieman, M. Costanzi, J. Meyers, G. Gutierrez, Gary Bernstein, Enrique Gaztanaga, B. Flaugher, Ofer Lahav, Ramon Miquel, Eli S. Rykoff, M. A. G. Maia, J. Carretero, G. Tarle, A. R. Walker, Ian Harrison, M. E. C. Swanson, P. F. Léget, S. Everett, S. Pandey, E. Suchyta, I. Sevilla-Noarbe, M. Smith, Peter Melchior, T. M. C. Abbott, Keith Bechtol, Juan Garcia-Bellido, J. De Vicente, N. Kuropatkin, D. L. Hollowood, M. Carrasco Kind, Michael Troxel, Daniel Gruen, M. Gatti, S. Serrano, A. Choi, W. C. Wester, A. Roodman, Matt J. Jarvis, E. J. Sanchez, David J. Brooks, T. N. Varga, K. Honscheid, Peter Doel, A. Carnero Rosell, R. L. C. Ogando, Joe Zuntz, H. T. Diehl, L. N. da Costa, Niall MacCrann, Alexandra Amon, Felipe Menanteau, D. W. Gerdes, A. A. Plazas, S. Vorperian, Kyler Kuehn, L. F. Secco, Sunayana Bhargava, Jennifer L. Marshall, K. Wei, S. Allam, Robert A. Gruendl, R. Chen, Michel Aguena, F. Paz-Chinchón, UAM. Departamento de Física Teórica, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), DES, Jarvis, M., Bernstein, G. M., Amon, A., Davis, C., Léget, P. F., Bechtol, K., Harrison, I., Gatti, M., Roodman, A., Chang, C., Chen, R., Choi, A., Desai, S., Drlica-Wagner, A., Gruen, D., Gruendl, R. A., Hernandez, A., Maccrann, N., Meyers, J., Navarro-Alsina, A., Pandey, S., Plazas, A. A., Secco, L. F., Sheldon, E., Troxel, M. A., Vorperian, S., Wei, K., Zuntz, J., Abbott, T. M. C., Aguena, M., Allam, S., Avila, S., Bhargava, S., Bridle, S. L., Brooks, D., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Costanzi, M., da Costa, L. N., De Vicente, J., Diehl, H. T., Doel, P., Everett, S., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., James, D. J., Kent, S., Kuehn, K., Kuropatkin, N., Lahav, O., Maia, M. A. G., March, M., Marshall, J. L., Melchior, P., Menanteau, F., Miquel, R., Ogando, R. L. C., Paz-Chinchón, F., Rykoff, E. S., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Sevilla-Noarbe, I., Smith, M., Suchyta, E., Swanson, M. E. C., Tarle, G., Varga, T. N., Walker, A. R., Wester, W., and Wilkinson, R. D. (DES Collaboration)
- Subjects
Point spread function ,Systematic error ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Sextractor ,FOS: Physical sciences ,Image Processing [Techniques] ,Field of view ,Surveys ,Cosmology: Observations ,01 natural sciences ,data analysi [software] ,Observations [Cosmology] ,Techniques: Image Processing ,0103 physical sciences ,Range (statistics) ,survey ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,2mass ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics ,Software: Data Analysis ,Weak gravitational lensing ,Physics ,Gravitational Lensing: Weak ,010308 nuclear & particles physics ,Física ,Astronomy and Astrophysics ,Mass ,Catalogues ,Software package ,Galaxy ,gravitational lensing: weak ,techniques: image processing ,catalogues ,surveys ,software: data analysis ,cosmology: observations ,Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Space and Planetary Science ,Weak [Gravitational Lensing] ,Dark energy ,Data Analysis [Software] ,Catalog ,catalogue ,Astrophysics - Instrumentation and Methods for Astrophysic ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Algorithm ,[PHYS.PHYS.PHYS-DATA-AN]Physics [physics]/Physics [physics]/Data Analysis, Statistics and Probability [physics.data-an] ,observation [cosmology] - Abstract
We introduce a new software package for modeling 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 modeling 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 modeling 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 modeling errors in future analyses., Comment: 19 pages, accepted/published by MNRAS. See https://www.darkenergysurvey.org/des-year-3-cosmology-results-papers/ for the full DES Y3 cosmology release
- Published
- 2020
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