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The Dark Energy Survey Supernova program: light curves and 5 yr data release

The Dark Energy Survey Supernova program: light curves and 5 yr data release
The Dark Energy Survey Supernova program: light curves and 5 yr data release
We present griz photometric light curves for the full 5 yr of the Dark Energy Survey Supernova (DES-SN) program, obtained with both forced point-spread function photometry on difference images (DiffImg) performed during survey operations, and scene modelling photometry (SMP) on search images processed after the survey. This release contains 31,636 DiffImg and 19,706 high-quality SMP light curves, the latter of which contain 1635 photometrically classified SNe that pass cosmology quality cuts. This sample spans the largest redshift (z) range ever covered by a single SN survey (0.1 < z < 1.13) and is the largest single sample from a single instrument of SNe ever used for cosmological constraints. We describe in detail the improvements made to obtain the final DES-SN photometry and provide a comparison to what was used in the 3 yr DES-SN spectroscopically confirmed Type Ia SN sample. We also include a comparative analysis of the performance of the SMP photometry with respect to the real-time DiffImg forced photometry and find that SMP photometry is more precise, more accurate, and less sensitive to the host-galaxy surface brightness anomaly. The public release of the light curves and ancillary data can be found at github.com/des-science/DES-SN5YR and doi:10.5281/zenodo.12720777....
0004-637X
Sánchez, B. O.
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Brout, D.
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Vincenzi, M.
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Sako, M.
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Herner, K.
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Kessler, R.
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Davis, T.M.
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Scolnic, D.
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Acevedo, M.
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Lee, J.
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Möller, A.
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Qu, H.
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Kelsey, L.
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Wiseman, P.
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Armstrong, P.
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Rose, B.
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Camilleri, R.
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Chen, R.
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Galbany, L.
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Kovacs, E.
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Lidman, C.
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Popovic, B.
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Smith, M.
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Shah, P.
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Sullivan, M.
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Toy, M.
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Abbott, T.M.C.
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Aguena, M.
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Allam, S.
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Alves, O.
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Annis, J.
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Asorey, J.
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Avila, S.
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Bacon, D.
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Brooks, D.
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Burke, D.L.
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Carnero Rosell, A.
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Carollo, D.
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Carretero, J.
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da Costa, L.N.
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Castander, F.J.
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Desai, S.
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Diehl, H.T.
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Duarte, J.
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Everett, S.
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Ferrero, I.
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Flaugher, B.
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Frieman, J.
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García-Bellido, J.
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Gatti, M.
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The DES Collaboration
Sánchez, B. O.
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Brout, D.
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Vincenzi, M.
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Sako, M.
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Herner, K.
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Kessler, R.
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Davis, T.M.
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Scolnic, D.
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Acevedo, M.
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Lee, J.
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Möller, A.
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Qu, H.
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Kelsey, L.
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Wiseman, P.
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Armstrong, P.
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Rose, B.
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Camilleri, R.
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Chen, R.
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Galbany, L.
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Kovacs, E.
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Lidman, C.
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Popovic, B.
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Smith, M.
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Shah, P.
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Sullivan, M.
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Toy, M.
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Abbott, T.M.C.
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Aguena, M.
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Allam, S.
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Alves, O.
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Annis, J.
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Asorey, J.
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Avila, S.
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Bacon, D.
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Brooks, D.
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Burke, D.L.
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Carnero Rosell, A.
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Carollo, D.
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Carretero, J.
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da Costa, L.N.
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Castander, F.J.
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Desai, S.
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Diehl, H.T.
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Duarte, J.
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Everett, S.
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Ferrero, I.
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Flaugher, B.
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Frieman, J.
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García-Bellido, J.
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Gatti, M.
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Sánchez, B. O., Brout, D. and Vincenzi, M. , The DES Collaboration (2024) The Dark Energy Survey Supernova program: light curves and 5 yr data release. The Astrophysical Journal, 975 (1), [5]. (doi:10.3847/1538-4357/ad739a).

Record type: Article

Abstract

We present griz photometric light curves for the full 5 yr of the Dark Energy Survey Supernova (DES-SN) program, obtained with both forced point-spread function photometry on difference images (DiffImg) performed during survey operations, and scene modelling photometry (SMP) on search images processed after the survey. This release contains 31,636 DiffImg and 19,706 high-quality SMP light curves, the latter of which contain 1635 photometrically classified SNe that pass cosmology quality cuts. This sample spans the largest redshift (z) range ever covered by a single SN survey (0.1 < z < 1.13) and is the largest single sample from a single instrument of SNe ever used for cosmological constraints. We describe in detail the improvements made to obtain the final DES-SN photometry and provide a comparison to what was used in the 3 yr DES-SN spectroscopically confirmed Type Ia SN sample. We also include a comparative analysis of the performance of the SMP photometry with respect to the real-time DiffImg forced photometry and find that SMP photometry is more precise, more accurate, and less sensitive to the host-galaxy surface brightness anomaly. The public release of the light curves and ancillary data can be found at github.com/des-science/DES-SN5YR and doi:10.5281/zenodo.12720777....

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Accepted/In Press date: 23 August 2024
Published date: 1 October 2024
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Identifiers

Local EPrints ID: 499919
URI: http://eprints.soton.ac.uk/id/eprint/499919
DOI: doi:10.3847/1538-4357/ad739a
ISSN: 0004-637X
PURE UUID: 405127f6-f79c-4f06-b48c-f5375a04c866
ORCID for P. Wiseman: ORCID iD orcid.org/0000-0002-3073-1512
ORCID for M. Sullivan: ORCID iD orcid.org/0000-0001-9053-4820

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Date deposited: 08 Apr 2025 16:50
Last modified: 22 Aug 2025 02:21

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Contributors

Author: B. O. Sánchez
Author: D. Brout
Author: M. Vincenzi
Author: M. Sako
Author: K. Herner
Author: R. Kessler
Author: T.M. Davis
Author: D. Scolnic
Author: M. Acevedo
Author: J. Lee
Author: A. Möller
Author: H. Qu
Author: L. Kelsey
Author: P. Wiseman ORCID iD
Author: P. Armstrong
Author: B. Rose
Author: R. Camilleri
Author: R. Chen
Author: L. Galbany
Author: E. Kovacs
Author: C. Lidman
Author: B. Popovic
Author: M. Smith
Author: P. Shah
Author: M. Sullivan ORCID iD
Author: M. Toy
Author: T.M.C. Abbott
Author: M. Aguena
Author: S. Allam
Author: O. Alves
Author: J. Annis
Author: J. Asorey
Author: S. Avila
Author: D. Bacon
Author: D. Brooks
Author: D.L. Burke
Author: A. Carnero Rosell
Author: D. Carollo
Author: J. Carretero
Author: L.N. da Costa
Author: F.J. Castander
Author: S. Desai
Author: H.T. Diehl
Author: J. Duarte
Author: S. Everett
Author: I. Ferrero
Author: B. Flaugher
Author: J. Frieman
Author: J. García-Bellido
Author: M. Gatti
Corporate Author: The DES Collaboration

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