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The DECADE cosmic shear project II: photometric redshift calibration of the source galaxy sample

Fuente: arXiv

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Detalles Bibliográficos
Autores principales:	Anbajagane, D., Alarcon, A., Teixeira, R., Chang, C., Secco, L. F., Tan, C. Y., Drlica-Wagner, A., Adamow, M., Gruendl, R. A., Giannini, G., Becker, M. R., Ferguson, P. S., Chicoine, N., Zhang, Z., Herron, K., Suson, D., Alsina, A. N., Amon, A., Bom, C. R., Carballo-Bello, J. A., Cerny, W., Choi, A., Choi, Y., Doux, C., Eckert, K., Gatti, M., Gruen, D., Hartley, W. G., Herner, K., Huff, E. M., James, D. J., Kuropatkin, N., Martínez-Vázquez, C. E., Massana, P., Mau, S., McCullough, J., Medina, G. E., Mutlu-Pakdil, B., Myles, J., Navabi, M., Noël, N. E. D., Pace, A. B., Raveri, M., Riley, A. H., Sakowska, J. D., Sanchez-Cid, D., Sand, D. J., Santana-Silva, L., Sevilla-Noarbe, I., Soares-Santos, M., Stringfellow, G. S., Vivas, A. K., Yamamoto, M.
Formato:	Preprint
Publicado:	2025
Materias:	Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

_version_	1866909865399549952
author	Anbajagane, D. Alarcon, A. Teixeira, R. Chang, C. Secco, L. F. Tan, C. Y. Drlica-Wagner, A. Adamow, M. Gruendl, R. A. Giannini, G. Becker, M. R. Ferguson, P. S. Chicoine, N. Zhang, Z. Herron, K. Suson, D. Alsina, A. N. Amon, A. Bom, C. R. Carballo-Bello, J. A. Cerny, W. Choi, A. Choi, Y. Doux, C. Eckert, K. Gatti, M. Gruen, D. Hartley, W. G. Herner, K. Huff, E. M. James, D. J. Kuropatkin, N. Martínez-Vázquez, C. E. Massana, P. Mau, S. McCullough, J. Medina, G. E. Mutlu-Pakdil, B. Myles, J. Navabi, M. Noël, N. E. D. Pace, A. B. Raveri, M. Riley, A. H. Sakowska, J. D. Sanchez-Cid, D. Sand, D. J. Santana-Silva, L. Sevilla-Noarbe, I. Soares-Santos, M. Stringfellow, G. S. Vivas, A. K. Yamamoto, M.
author_facet	Anbajagane, D. Alarcon, A. Teixeira, R. Chang, C. Secco, L. F. Tan, C. Y. Drlica-Wagner, A. Adamow, M. Gruendl, R. A. Giannini, G. Becker, M. R. Ferguson, P. S. Chicoine, N. Zhang, Z. Herron, K. Suson, D. Alsina, A. N. Amon, A. Bom, C. R. Carballo-Bello, J. A. Cerny, W. Choi, A. Choi, Y. Doux, C. Eckert, K. Gatti, M. Gruen, D. Hartley, W. G. Herner, K. Huff, E. M. James, D. J. Kuropatkin, N. Martínez-Vázquez, C. E. Massana, P. Mau, S. McCullough, J. Medina, G. E. Mutlu-Pakdil, B. Myles, J. Navabi, M. Noël, N. E. D. Pace, A. B. Raveri, M. Riley, A. H. Sakowska, J. D. Sanchez-Cid, D. Sand, D. J. Santana-Silva, L. Sevilla-Noarbe, I. Soares-Santos, M. Stringfellow, G. S. Vivas, A. K. Yamamoto, M.
contents	We present the photometric redshift characterization and calibration for the Dark Energy Camera All Data Everywhere (DECADE) weak lensing dataset: a catalog of 107 million galaxies observed by the Dark Energy Camera (DECam) in the northern Galactic cap. The redshifts are estimated from a combination of wide-field photometry, deep-field photometry with associated redshift estimates, and a transfer function between the wide field and deep field that is estimated using a source injection catalog. We construct four tomographic bins for the galaxy catalog, and estimate the redshift distribution, $n(z)$, within each one using the Self-organizing Map Photo-Z (SOMPZ) methodology. Our estimates include the contributions from sample variance, zeropoint calibration uncertainties, and redshift biases, as quantified for the deep-field dataset. The total uncertainties on the mean redshifts are $σ_{\langle z \rangle} \approx 0.01$. The SOMPZ estimates are then compared to those from the clustering redshift method, obtained by cross-correlating our source galaxies with galaxies in spectroscopic surveys, and are shown to be consistent with each other.
format	Preprint
id	arxiv_https___arxiv_org_abs_2502_17675
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	The DECADE cosmic shear project II: photometric redshift calibration of the source galaxy sample Anbajagane, D. Alarcon, A. Teixeira, R. Chang, C. Secco, L. F. Tan, C. Y. Drlica-Wagner, A. Adamow, M. Gruendl, R. A. Giannini, G. Becker, M. R. Ferguson, P. S. Chicoine, N. Zhang, Z. Herron, K. Suson, D. Alsina, A. N. Amon, A. Bom, C. R. Carballo-Bello, J. A. Cerny, W. Choi, A. Choi, Y. Doux, C. Eckert, K. Gatti, M. Gruen, D. Hartley, W. G. Herner, K. Huff, E. M. James, D. J. Kuropatkin, N. Martínez-Vázquez, C. E. Massana, P. Mau, S. McCullough, J. Medina, G. E. Mutlu-Pakdil, B. Myles, J. Navabi, M. Noël, N. E. D. Pace, A. B. Raveri, M. Riley, A. H. Sakowska, J. D. Sanchez-Cid, D. Sand, D. J. Santana-Silva, L. Sevilla-Noarbe, I. Soares-Santos, M. Stringfellow, G. S. Vivas, A. K. Yamamoto, M. Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics We present the photometric redshift characterization and calibration for the Dark Energy Camera All Data Everywhere (DECADE) weak lensing dataset: a catalog of 107 million galaxies observed by the Dark Energy Camera (DECam) in the northern Galactic cap. The redshifts are estimated from a combination of wide-field photometry, deep-field photometry with associated redshift estimates, and a transfer function between the wide field and deep field that is estimated using a source injection catalog. We construct four tomographic bins for the galaxy catalog, and estimate the redshift distribution, $n(z)$, within each one using the Self-organizing Map Photo-Z (SOMPZ) methodology. Our estimates include the contributions from sample variance, zeropoint calibration uncertainties, and redshift biases, as quantified for the deep-field dataset. The total uncertainties on the mean redshifts are $σ_{\langle z \rangle} \approx 0.01$. The SOMPZ estimates are then compared to those from the clustering redshift method, obtained by cross-correlating our source galaxies with galaxies in spectroscopic surveys, and are shown to be consistent with each other.
title	The DECADE cosmic shear project II: photometric redshift calibration of the source galaxy sample
topic	Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
url	https://arxiv.org/abs/2502.17675