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Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog

Fuente: arXiv

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Main Authors:	Anbajagane, D., Tabbutt, M., Beas-Gonzalez, J., Yanny, B., Everett, S., Becker, M. R., Yamamoto, M., Legnani, E., De Vicente, J., Bechtol, K., Elvin-Poole, J., Bernstein, G. M., Choi, A., Gatti, M., Giannini, G., Gruendl, R. A., Jarvis, M., Lee, S., Mena-Fernández, J., Porredon, A., Rodriguez-Monroy, M., Rozo, E., Rykoff, E. S., Schutt, T., Sheldon, E., Troxel, M. A., Weaverdyck, N., Wetzell, V., Aguena, M., Alarcon, A., Allam, S., Amon, A., Andrade-Oliveira, F., Blazek, J., Brooks, D., Rosell, A. Carnero, Carretero, J., Chang, C., Crocce, M., da Costa, L. N., Pereira, M. E. S., Davis, T. M., Desai, S., Diehl, H. T., Dodelson, S., Doel, P., Drlica-Wagner, A., Ferté, A., Frieman, J., García-Bellido, J., Gaztanaga, E., Gruen, D., Gutierrez, G., Hartley, W. G., Herner, K., Hinton, S. R., Hollowood, D. L., Honscheid, K., Huterer, D., James, D. J., Krause, E., Kuehn, K., Lahav, O., Marshall, J. L., Miquel, R., Muir, J., Myles, J., Pieres, A., Malagón, A. A. Plazas, Prat, J., Raveri, M., Samuroff, S., Sanchez, E., Cid, D. Sanchez, Sevilla-Noarbe, I., Smith, M., Suchyta, E., Tarle, G., Tucker, D. L., Walker, A. R., Wiseman, P., Zhang, Y.
Format:	Preprint
Published:	2025
Subjects:	Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
Online Access:	Acceder al recurso
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_version_	1866909626778255360
author	Anbajagane, D. Tabbutt, M. Beas-Gonzalez, J. Yanny, B. Everett, S. Becker, M. R. Yamamoto, M. Legnani, E. De Vicente, J. Bechtol, K. Elvin-Poole, J. Bernstein, G. M. Choi, A. Gatti, M. Giannini, G. Gruendl, R. A. Jarvis, M. Lee, S. Mena-Fernández, J. Porredon, A. Rodriguez-Monroy, M. Rozo, E. Rykoff, E. S. Schutt, T. Sheldon, E. Troxel, M. A. Weaverdyck, N. Wetzell, V. Aguena, M. Alarcon, A. Allam, S. Amon, A. Andrade-Oliveira, F. Blazek, J. Brooks, D. Rosell, A. Carnero Carretero, J. Chang, C. Crocce, M. da Costa, L. N. Pereira, M. E. S. Davis, T. M. Desai, S. Diehl, H. T. Dodelson, S. Doel, P. Drlica-Wagner, A. Ferté, A. Frieman, J. García-Bellido, J. Gaztanaga, E. Gruen, D. Gutierrez, G. Hartley, W. G. Herner, K. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huterer, D. James, D. J. Krause, E. Kuehn, K. Lahav, O. Marshall, J. L. Miquel, R. Muir, J. Myles, J. Pieres, A. Malagón, A. A. Plazas Prat, J. Raveri, M. Samuroff, S. Sanchez, E. Cid, D. Sanchez Sevilla-Noarbe, I. Smith, M. Suchyta, E. Tarle, G. Tucker, D. L. Walker, A. R. Wiseman, P. Zhang, Y.
author_facet	Anbajagane, D. Tabbutt, M. Beas-Gonzalez, J. Yanny, B. Everett, S. Becker, M. R. Yamamoto, M. Legnani, E. De Vicente, J. Bechtol, K. Elvin-Poole, J. Bernstein, G. M. Choi, A. Gatti, M. Giannini, G. Gruendl, R. A. Jarvis, M. Lee, S. Mena-Fernández, J. Porredon, A. Rodriguez-Monroy, M. Rozo, E. Rykoff, E. S. Schutt, T. Sheldon, E. Troxel, M. A. Weaverdyck, N. Wetzell, V. Aguena, M. Alarcon, A. Allam, S. Amon, A. Andrade-Oliveira, F. Blazek, J. Brooks, D. Rosell, A. Carnero Carretero, J. Chang, C. Crocce, M. da Costa, L. N. Pereira, M. E. S. Davis, T. M. Desai, S. Diehl, H. T. Dodelson, S. Doel, P. Drlica-Wagner, A. Ferté, A. Frieman, J. García-Bellido, J. Gaztanaga, E. Gruen, D. Gutierrez, G. Hartley, W. G. Herner, K. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huterer, D. James, D. J. Krause, E. Kuehn, K. Lahav, O. Marshall, J. L. Miquel, R. Muir, J. Myles, J. Pieres, A. Malagón, A. A. Plazas Prat, J. Raveri, M. Samuroff, S. Sanchez, E. Cid, D. Sanchez Sevilla-Noarbe, I. Smith, M. Suchyta, E. Tarle, G. Tucker, D. L. Walker, A. R. Wiseman, P. Zhang, Y.
contents	Synthetic source injection (SSI), the insertion of sources into pixel-level on-sky images, is a powerful method for characterizing object detection and measurement in wide-field, astronomical imaging surveys. Within the Dark Energy Survey (DES), SSI plays a critical role in characterizing all necessary algorithms used in converting images to catalogs, and in deriving quantities needed for the cosmology analysis, such as object detection rates, galaxy redshift estimation, galaxy magnification, star-galaxy classification, and photometric performance. We present here a source injection catalog of $146$ million injections spanning the entire 5000 deg$^2$ DES footprint, generated using the Balrog SSI pipeline. Through this sample, we demonstrate that the DES Year 6 (Y6) image processing pipeline provides accurate estimates of the object properties, for both galaxies and stars, at the percent-level, and we highlight specific regimes where the accuracy is reduced. We then show the consistency between SSI and data catalogs, for all galaxy samples developed within the weak lensing and galaxy clustering analyses of DES Y6. The consistency between the two catalogs also extends to their correlations with survey observing properties (seeing, airmass, depth, extinction, etc.). Finally, we highlight a number of applications of this catalog to the DES Y6 cosmology analysis. This dataset is the largest SSI catalog produced at this fidelity and will serve as a key testing ground for exploring the utility of SSI catalogs in upcoming surveys such as the Vera C. Rubin Observatory Legacy Survey of Space and Time.
format	Preprint
id	arxiv_https___arxiv_org_abs_2501_05683
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog Anbajagane, D. Tabbutt, M. Beas-Gonzalez, J. Yanny, B. Everett, S. Becker, M. R. Yamamoto, M. Legnani, E. De Vicente, J. Bechtol, K. Elvin-Poole, J. Bernstein, G. M. Choi, A. Gatti, M. Giannini, G. Gruendl, R. A. Jarvis, M. Lee, S. Mena-Fernández, J. Porredon, A. Rodriguez-Monroy, M. Rozo, E. Rykoff, E. S. Schutt, T. Sheldon, E. Troxel, M. A. Weaverdyck, N. Wetzell, V. Aguena, M. Alarcon, A. Allam, S. Amon, A. Andrade-Oliveira, F. Blazek, J. Brooks, D. Rosell, A. Carnero Carretero, J. Chang, C. Crocce, M. da Costa, L. N. Pereira, M. E. S. Davis, T. M. Desai, S. Diehl, H. T. Dodelson, S. Doel, P. Drlica-Wagner, A. Ferté, A. Frieman, J. García-Bellido, J. Gaztanaga, E. Gruen, D. Gutierrez, G. Hartley, W. G. Herner, K. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huterer, D. James, D. J. Krause, E. Kuehn, K. Lahav, O. Marshall, J. L. Miquel, R. Muir, J. Myles, J. Pieres, A. Malagón, A. A. Plazas Prat, J. Raveri, M. Samuroff, S. Sanchez, E. Cid, D. Sanchez Sevilla-Noarbe, I. Smith, M. Suchyta, E. Tarle, G. Tucker, D. L. Walker, A. R. Wiseman, P. Zhang, Y. Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Synthetic source injection (SSI), the insertion of sources into pixel-level on-sky images, is a powerful method for characterizing object detection and measurement in wide-field, astronomical imaging surveys. Within the Dark Energy Survey (DES), SSI plays a critical role in characterizing all necessary algorithms used in converting images to catalogs, and in deriving quantities needed for the cosmology analysis, such as object detection rates, galaxy redshift estimation, galaxy magnification, star-galaxy classification, and photometric performance. We present here a source injection catalog of $146$ million injections spanning the entire 5000 deg$^2$ DES footprint, generated using the Balrog SSI pipeline. Through this sample, we demonstrate that the DES Year 6 (Y6) image processing pipeline provides accurate estimates of the object properties, for both galaxies and stars, at the percent-level, and we highlight specific regimes where the accuracy is reduced. We then show the consistency between SSI and data catalogs, for all galaxy samples developed within the weak lensing and galaxy clustering analyses of DES Y6. The consistency between the two catalogs also extends to their correlations with survey observing properties (seeing, airmass, depth, extinction, etc.). Finally, we highlight a number of applications of this catalog to the DES Y6 cosmology analysis. This dataset is the largest SSI catalog produced at this fidelity and will serve as a key testing ground for exploring the utility of SSI catalogs in upcoming surveys such as the Vera C. Rubin Observatory Legacy Survey of Space and Time.
title	Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog
topic	Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
url	https://arxiv.org/abs/2501.05683