First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters Academic Article uri icon

abstract

  • Abstract We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNeIa from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our DES-SN3YR result from these 329 SNeIa is based on a series of companion analyses and improvements covering SNIa discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat CDM model we find a matter density m{Omega }}}_{{
    m{m}}}=0.331pm 0.038$?>     . For a flat wCDM model, and combining our SNIa constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state , and m{Omega }}}_{{
    m{m}}}=0.321pm 0.018$?>     . For a flat w 0 w a CDM model, and combining probes from SNIa, CMB and baryon acoustic oscillations, we find and . These results are in agreement with a cosmological constant and with previous constraints using SNeIa (Pantheon, JLA).

published proceedings

  • ASTROPHYSICAL JOURNAL LETTERS

altmetric score

  • 44.15

author list (cited authors)

  • Abbott, T., Allam, S., Andersen, P., Angus, C., Asorey, J., Avelino, A., ... Zhang, Y.

citation count

  • 202

complete list of authors

  • Abbott, TMC||Allam, S||Andersen, P||Angus, C||Asorey, J||Avelino, A||Avila, S||Bassett, BA||Bechtol, K||Bernstein, GM||Bertin, E||Brooks, D||Brout, D||Brown, P||Burke, DL||Calcino, J||Carnero Rosell, A||Carollo, D||Kind, M Carrasco||Carretero, J||Casas, R||Castander, FJ||Cawthon, R||Challis, P||Childress, M||Clocchiatti, A||Cunha, CE||D'Andrea, CB||da Costa, LN||Davis, C||Davis, TM||De Vicente, J||DePoy, DL||Desai, S||Diehl, HT||Doel, P||Drlica-Wagner, A||Eifler, TF||Evrard, AE||Fernandez, E||Filippenko, AV||Finley, DA||Flaugher, B||Foley, RJ||Fosalba, P||Frieman, J||Galbany, L||Garcia-Bellido, J||Gaztanaga, E||Giannantonio, T||Glazebrook, K||Goldstein, DA||Gonzalez-Gaitan, S||Gruen, D||Gruendl, RA||Gschwend, J||Gupta, RR||Gutierrez, G||Hartley, WG||Hinton, SR||Hollowood, DL||Honscheid, K||Hoormann, JK||Hoyle, B||James, DJ||Jeltema, T||Johnson, MWG||Johnson, MD||Kasai, E||Kent, S||Kessler, R||Kim, AG||Kirshner, RP||Kovacs, E||Krause, E||Kron, R||Kuehn, K||Kuhlmann, S||Kuropatkin, N||Lahav, O||Lasker, J||Lewis, GF||Li, TS||Lidman, C||Lima, M||Lin, H||Macaulay, E||Maia, MAG||Mandel, KS||March, M||Marriner, J||Marshall, JL||Martini, P||Menanteau, F||Miller, CJ||Miquel, R||Miranda, V||Mohr, JJ||Morganson, E||Muthukrishna, D||Moller, A||Neilsen, E||Nichol, RC||Nord, B||Nugent, P||Ogando, RLC||Palmese, A||Pan, Y-C||Plazas, AA||Pursiainen, M||Romer, AK||Roodman, A||Rozo, E||Rykoff, ES||Sako, M||Sanchez, E||Scarpine, V||Schindler, R||Schubnell, M||Scolnic, D||Serrano, S||Sevilla-Noarbe, I||Sharp, R||Smith, M||Soares-Santos, M||Sobreira, F||Sommer, NE||Spinka, H||Suchyta, E||Sullivan, M||Swann, E||Tarle, G||Thomas, D||Thomas, RC||Troxel, MA||Tucker, BE||Uddin, SA||Walker, AR||Wester, W||Wiseman, P||Wolf, RC||Yanny, B||Zhang, B||Zhang, Y

publication date

  • February 2019