Copertina

Dark Energy Survey Year 6 Results: Point-spread Function Modeling

Fuente: arXiv

Salvato in:

Dettagli Bibliografici
Autori principali:	Schutt, T., Jarvis, M., Roodman, A., Amon, A., Becker, M. R., Gruendl, R. A., Yamamoto, M., Bechtol, K., Bernstein, G. M., Gatti, M., Rykoff, E. S., Sheldon, E., Troxel, M. A., Abbott, T. M. C., Aguena, M., Alarcon, A., Andrade-Oliveira, F., Brooks, D., Rosell, A. Carnero, Carretero, J., Chang, C., Choi, A., Crocce, M., da Costa, L. N., Davis, T. M., De Vicente, J., Desai, S., Diehl, H. T., Dodelson, S., Doel, P., Doux, C., Drlica-Wagner, A., Ferté, A., Frieman, J., García-Bellido, J., Gaztanaga, E., Giannini, G., Gruen, D., Gutierrez, G., Hartley, W. G., Herner, K., Hinton, S. R., Hollowood, D. L., Honscheid, K., Huterer, D., Krause, E., Kuehn, K., Lahav, O., Lee, S., Lima, M., Marshall, J. L., Mena-Fernández, J., Miquel, R., Mohr, J. J., Muir, J., Myles, J., Ogando, R. L. C., Pieres, A., Malagón, A. A. Plazas, Porredon, A., Raveri, M., Rodriguez-Monroy, M., Samuroff, S., Sanchez, E., Cid, D. Sanchez, Sevilla-Noarbe, I., Smith, M., Suchyta, E., Tarle, G., Vikram, V., Walker, A. R., Weaverdyck, N., Zhang, Y.
Natura:	Preprint
Pubblicazione:	2025
Soggetti:	Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
Accesso online:	Acceder al recurso
Tags:	Aggiungi Tag Nessun Tag, puoi essere il primo ad aggiungerne!!

_version_	1866915204066967552
author	Schutt, T. Jarvis, M. Roodman, A. Amon, A. Becker, M. R. Gruendl, R. A. Yamamoto, M. Bechtol, K. Bernstein, G. M. Gatti, M. Rykoff, E. S. Sheldon, E. Troxel, M. A. Abbott, T. M. C. Aguena, M. Alarcon, A. Andrade-Oliveira, F. Brooks, D. Rosell, A. Carnero Carretero, J. Chang, C. Choi, A. Crocce, M. da Costa, L. N. Davis, T. M. De Vicente, J. Desai, S. Diehl, H. T. Dodelson, S. Doel, P. Doux, C. Drlica-Wagner, A. Ferté, A. Frieman, J. García-Bellido, J. Gaztanaga, E. Giannini, G. Gruen, D. Gutierrez, G. Hartley, W. G. Herner, K. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huterer, D. Krause, E. Kuehn, K. Lahav, O. Lee, S. Lima, M. Marshall, J. L. Mena-Fernández, J. Miquel, R. Mohr, J. J. Muir, J. Myles, J. Ogando, R. L. C. Pieres, A. Malagón, A. A. Plazas Porredon, A. Raveri, M. Rodriguez-Monroy, M. Samuroff, S. Sanchez, E. Cid, D. Sanchez Sevilla-Noarbe, I. Smith, M. Suchyta, E. Tarle, G. Vikram, V. Walker, A. R. Weaverdyck, N. Zhang, Y.
author_facet	Schutt, T. Jarvis, M. Roodman, A. Amon, A. Becker, M. R. Gruendl, R. A. Yamamoto, M. Bechtol, K. Bernstein, G. M. Gatti, M. Rykoff, E. S. Sheldon, E. Troxel, M. A. Abbott, T. M. C. Aguena, M. Alarcon, A. Andrade-Oliveira, F. Brooks, D. Rosell, A. Carnero Carretero, J. Chang, C. Choi, A. Crocce, M. da Costa, L. N. Davis, T. M. De Vicente, J. Desai, S. Diehl, H. T. Dodelson, S. Doel, P. Doux, C. Drlica-Wagner, A. Ferté, A. Frieman, J. García-Bellido, J. Gaztanaga, E. Giannini, G. Gruen, D. Gutierrez, G. Hartley, W. G. Herner, K. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huterer, D. Krause, E. Kuehn, K. Lahav, O. Lee, S. Lima, M. Marshall, J. L. Mena-Fernández, J. Miquel, R. Mohr, J. J. Muir, J. Myles, J. Ogando, R. L. C. Pieres, A. Malagón, A. A. Plazas Porredon, A. Raveri, M. Rodriguez-Monroy, M. Samuroff, S. Sanchez, E. Cid, D. Sanchez Sevilla-Noarbe, I. Smith, M. Suchyta, E. Tarle, G. Vikram, V. Walker, A. R. Weaverdyck, N. Zhang, Y.
contents	We present the point-spread function (PSF) modeling for weak lensing shear measurement using the full six years of the Dark Energy Survey (DES Y6) data. We review the PSF estimation procedure using the PIFF (PSFs In the Full FOV) software package and describe the key improvements made to PIFF and modeling diagnostics since the DES year three (Y3) analysis: (i) use of external Gaia and infrared photometry catalogs to ensure higher purity of the stellar sample used for model fitting, (ii) addition of color-dependent PSF modeling, the first for any weak lensing analysis, and (iii) inclusion of model diagnostics inspecting fourth-order moments, which can bias weak lensing measurements to a similar degree as second-order modeling errors. Through a comprehensive set of diagnostic tests, we demonstrate the improved accuracy of the Y6 models evident in significantly smaller systematic errors than those of the Y3 analysis, in which all $g$ band data were excluded due to insufficiently accurate PSF models. For the Y6 weak lensing analysis, we include $g$ band photometry data in addition to the $riz$ bands, providing a fourth band for photometric redshift estimation. Looking forward to the next generation of wide-field surveys, we describe several ongoing improvements to PIFF, which will be the default PSF modeling software for weak lensing analyses for the Vera C. Rubin Observatory's Legacy Survey of Space and Time.
format	Preprint
id	arxiv_https___arxiv_org_abs_2501_05781
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Dark Energy Survey Year 6 Results: Point-spread Function Modeling Schutt, T. Jarvis, M. Roodman, A. Amon, A. Becker, M. R. Gruendl, R. A. Yamamoto, M. Bechtol, K. Bernstein, G. M. Gatti, M. Rykoff, E. S. Sheldon, E. Troxel, M. A. Abbott, T. M. C. Aguena, M. Alarcon, A. Andrade-Oliveira, F. Brooks, D. Rosell, A. Carnero Carretero, J. Chang, C. Choi, A. Crocce, M. da Costa, L. N. Davis, T. M. De Vicente, J. Desai, S. Diehl, H. T. Dodelson, S. Doel, P. Doux, C. Drlica-Wagner, A. Ferté, A. Frieman, J. García-Bellido, J. Gaztanaga, E. Giannini, G. Gruen, D. Gutierrez, G. Hartley, W. G. Herner, K. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huterer, D. Krause, E. Kuehn, K. Lahav, O. Lee, S. Lima, M. Marshall, J. L. Mena-Fernández, J. Miquel, R. Mohr, J. J. Muir, J. Myles, J. Ogando, R. L. C. Pieres, A. Malagón, A. A. Plazas Porredon, A. Raveri, M. Rodriguez-Monroy, M. Samuroff, S. Sanchez, E. Cid, D. Sanchez Sevilla-Noarbe, I. Smith, M. Suchyta, E. Tarle, G. Vikram, V. Walker, A. R. Weaverdyck, N. Zhang, Y. Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics We present the point-spread function (PSF) modeling for weak lensing shear measurement using the full six years of the Dark Energy Survey (DES Y6) data. We review the PSF estimation procedure using the PIFF (PSFs In the Full FOV) software package and describe the key improvements made to PIFF and modeling diagnostics since the DES year three (Y3) analysis: (i) use of external Gaia and infrared photometry catalogs to ensure higher purity of the stellar sample used for model fitting, (ii) addition of color-dependent PSF modeling, the first for any weak lensing analysis, and (iii) inclusion of model diagnostics inspecting fourth-order moments, which can bias weak lensing measurements to a similar degree as second-order modeling errors. Through a comprehensive set of diagnostic tests, we demonstrate the improved accuracy of the Y6 models evident in significantly smaller systematic errors than those of the Y3 analysis, in which all $g$ band data were excluded due to insufficiently accurate PSF models. For the Y6 weak lensing analysis, we include $g$ band photometry data in addition to the $riz$ bands, providing a fourth band for photometric redshift estimation. Looking forward to the next generation of wide-field surveys, we describe several ongoing improvements to PIFF, which will be the default PSF modeling software for weak lensing analyses for the Vera C. Rubin Observatory's Legacy Survey of Space and Time.
title	Dark Energy Survey Year 6 Results: Point-spread Function Modeling
topic	Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
url	https://arxiv.org/abs/2501.05781