The Dark Energy Survey Supernova Program: Light curves and 5-Year data release
Abstract
We present photometric light curves for the full 5 years of the Dark Energy Survey Supernova program (DES-SN), obtained with both forced Point Spread Function (PSF) photometry on Difference Images (DIFFIMG) performed during survey operations, and Scene Modelling Photometry (SMP) on search images processed after the survey. This release contains DIFFIMG and high-quality SMP light curves, the latter of which contains photometrically-classified supernovae that pass cosmology quality cuts. This sample spans the largest redshift () range ever covered by a single SN survey () 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 DES-SN3YR spectroscopically-confirmed SN Ia 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 https://github.com/des-science/DES-SN5YR. Finally, we discuss implications for future transient surveys, such as the forthcoming Vera Rubin Observatory Legacy Survey of Space and Time (LSST).
Keywords
Cite
@article{arxiv.2406.05046,
title = {The Dark Energy Survey Supernova Program: Light curves and 5-Year data release},
author = {B. O. Sánchez and D. Brout and M. Vincenzi and M. Sako and K. Herner and R. Kessler and T. M. Davis and D. Scolnic and M. Acevedo and J. Lee and A. Möller and H. Qu and L. Kelsey and P. Wiseman and P. Armstrong and B. Rose and R. Camilleri and R. Chen and L. Galbany and E. Kovacs and C. Lidman and B. Popovic and M. Smith and M. Sullivan and M. Toy and D. Carollo and K. Glazebrook and G. F. Lewis and R. C. Nichol and B. E. Tucker and T. M. C. Abbott and M. Aguena and S. Allam and O. Alves and J. Annis and J. Asorey and S. Avila and D. Bacon and D. Brooks and D. L. Burke and A. Carnero Rosell and J. Carretero and F. J. Castander and L. N. da Costa and J. Duarte and M. E. S. Pereira and S. Desai and H. T. Diehl and S. Everett and I. Ferrero and B. Flaugher and J. Frieman and J. García-Bellido and M. Gatti and E. Gaztanaga and G. Giannini and R. A. Gruendl and G. Gutierrez and S. R. Hinton and D. L. Hollowood and K. Honscheid and D. J. James and K. Kuehn and O. Lahav and S. Lee and H. Lin and J. L. Marshall and J. Mena-Fernández and R. Miquel and J. Myles and A. Palmese and A. Pieres and A. A. Plazas Malagón and A. Porredon and A. K. Romer and E. Sanchez and D. Sanchez Cid and I. Sevilla-Noarbe and E. Suchyta and M. E. C. Swanson and G. Tarle and D. L. Tucker and V. Vikram and A. R. Walker and N. Weaverdyck},
journal= {arXiv preprint arXiv:2406.05046},
year = {2024}
}