The Dark Energy Survey: Cosmology Results with ∼1500 New High-redshift Type Ia Supernovae Using the Full 5 yr Data Set

Acevedo, M.; Aguena, M.; Alarcon, A.; Allam, S.; Alves, O.; Amon, A.; Andrade-Oliveira, F.; Annis, J.; Armstrong, P.; Asorey, J.; Àvila, S.; Bacon, D.; Bassett, Bruce A.; Bechtol, K.; Bernardinelli, Pedro H.; Bernstein, G. M.; Bertin, E.; Blazek, J.; Bocquet, S.; Brooks, D.; Brout, Dillon; Buckley-Geer, E.; Burke, D. L.; Camacho, H.; Camilleri, R.; Campos, A.; Rosell, A. Carnero; Carollo, D.; Carr, Anthony; Carretero, J.; Castander, F. J.; Cawthon, R.; Chang, C.; Chen, R; Choi, A.; Conselice, Christopher J.; Costanzi, M.; Costa, L. N. da; Crocce, M.; Davis, T. M.; DePoy, D. L.; Desai, S.; Diehl, H. T.; Dixon, M. E.; Dodelson, Scott; Doel, P.; Doux, C.; Drlica-Wagner, A.; Elvin-Poole, J.; Everett, S; Ferrero, I.; Ferté, A.; Flaugher, B; Foley, R. J.; Fosalba, P.; Friedel, D. N.; Frieman, J; Frohmaier, C.; Galbany, L.; García-Bellido, J.; Gatti, M.; Gaztañaga, E.; Giannini, G.; Glazebrook, Karl; Graur, Or; Gruen, D.; Gruendl, R. A.; Gutiérrez, G.; Hartley, W. G.; Herner, K.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; Huterer, Dragan; Jain, B.; James, D. J.; Jeffrey, N; Kasai, E.; Kelsey, L.; Kent, S.; Keßler, R.; Kim, Alex; Kirshner, R.; Kovacs, E.; Kuehn, K.; Lahav, O.; Lee, J; Lee, S.; Lewis, Geraint F.; Li, Ting S.; Lidman, C.; Lin, H.; Malik, U; Marshall, J. L.; Martini, P.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Mohr, J. J.; Mould, J. R.; Muir, J.; Möller, A.; Neilsen, Eric H.; Nichol, R. C.; Nugent, P.; Ogando, R. L. C.; Palmese, A.; Pan, Y. C.; Paterno, M.; Percival, Will J.; Pereira, M. E. S.; Pieres, A.; Malagón, A. A. Plazas; Popovic, B.; Porredon, A.; Prat, J.; Qu, Helen; Raveri, M.; Rodríguez-Monroy, M.; Romer, A. K.; Roodman, A.; Rose, Benjamin; Šako, M.; Sánchez, E.; Cid, D. Sanchez; Schubnell, M.; Scolnic, D.; Sevilla-Noarbe, I; Shah, P; Smith, J. A.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Sullivan, M.; Suntzeff, N. B.; Swanson, M. E. C.; Sánchez, B.; Tarlé, G.; Taylor, G.; Thomas, D.; To, C.; Toy, M.; Troxel, M. A.; Tucker, B.; Tucker, D. L.; Uddin, S. A.; Vincenzi, M.; Walker, A. R.; Weaverdyck, N.; Wechsler, Risa H.; Weller, J.; Wester, W. C.; Wiseman, P.; Yamamoto, M.; Yuan, F.; Zhang, B.; Zhang, Y.

doi:10.3847/2041-8213/ad6f9f

articleThe Astrophysical Journal LettersSep 1, 2024GOLD OA

The Dark Energy Survey: Cosmology Results with ∼1500 New High-redshift Type Ia Supernovae Using the Full 5 yr Data Set

MAM. Acevedo MAM. Aguena AAA. Alarcon SAS. Allam OAO. Alves

Institut d'Astrophysique de Paris · Laboratoire de Physique Subatomique et de Cosmologie · +2 more institutions

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Abstract

Abstract We present cosmological constraints from the sample of Type Ia supernovae (SNe Ia) discovered and measured during the full 5 yr of the Dark Energy Survey (DES) SN program. In contrast to most previous cosmological samples, in which SNe are classified based on their spectra, we classify the DES SNe using a machine learning algorithm applied to their light curves in four photometric bands. Spectroscopic redshifts are acquired from a dedicated follow-up survey of the host galaxies. After accounting for the likelihood of each SN being an SN Ia, we find 1635 DES SNe in the redshift range 0.10 < z < 1.13 that pass quality selection criteria sufficient to constrain cosmological parameters. This…

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Topics & keywords

Topics

Keywords

Redshift
Supernova
Physics
Dark energy
Astrophysics
Cosmology
Type (biology)
Galaxy

UN Sustainable Development Goals

Affordable and clean energy

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