First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters
Creators: name: Abbott, T. M. C.
name: Allam, S.
name: Andersen, P.
name: Angus, C.
name: Asorey, J.
name: Avelino, A.
name: Avila, S.
name: Bassett, B. A.
name: Bechtol, K.
name: Bernstein, G. M.
name: Bertin, E.
name: Brooks, D.
name: Brout, D.
name: Brown, P.
name: Burke, D. L.
name: Calcino, J.
name: Rosell, A. Carnero
name: Carollo, D.
name: Kind, M. Carrasco
name: Carretero, J.
name: Casas, R.
name: Castander, F. J.
name: Cawthon, R.
name: Challis, P.
name: Childress, M.
name: Clocchiatti, A.
name: Cunha, C. E.
name: D'Andrea, C. B.
name: da Costa, L. N.
name: Davis, C.
name: Davis, T. M.
name: De Vicente, J.
name: DePoy, D. L.
name: Desai, S.
name: Diehl, H. T.
name: Doel, P.
name: Drlica-Wagner, A.
name: Eifler, T. F.
name: Evrard, A. E.
name: Fernandez, E.
name: Filippenko, A. V.
name: Finley, D. A.
name: Flaugher, B.
name: Foley, R. J.
name: Fosalba, P.
name: Frieman, J.
name: Galbany, L.
name: Garcia-Bellido, J.
name: Gaztanaga, E.
name: Giannantonio, T.
name: Glazebrook, K.
name: Goldstein, D. A.
name: Gonzalez-Gaitan, S.
name: Gruen, D.
name: Gruendl, R. A.
name: Gschwend, J.
name: Gupta, R. R.
name: Gutierrez, G.
name: Hartley, W. G.
name: Hinton, S. R.
name: Hollowood, D. L.
name: Honscheid, K.
name: Hoormann, J. K.
name: Hoyle, B.
name: James, D. J.
name: Jeltema, T.
name: Johnson, M. W. G.
name: Johnson, M. D.
name: Kasai, E.
name: Kent, S.
name: Kessler, R.
name: Kim, A. G.
name: Kirshner, R. P.
name: Kovacs, E.
name: Krause, E.
name: Kron, R.
name: Kuehn, K.
name: Kuhlmann, S.
name: Kuropatkin, N.
name: Lahav, O.
name: Lasker, J.
name: Lewis, G. F.
name: Li, T. S.
name: Lidman, C.
name: Lima, M.
name: Lin, H.
name: Macaulay, E.
name: Maia, M. A. G.
name: Mandel, K. S.
name: March, M.
name: Marriner, J.
name: Marshall, J. L.
name: Martini, P.
name: Menanteau, F.
name: Miller, C. J.
name: Miquel, R.
name: Miranda, V.
name: Mohr, J. J.
name: Morganson, E.
name: Muthukrishna, D.
name: Möller, A.
name: Neilsen, E.
name: Nichol, R. C.
name: Nord, B.
name: Nugent, P.
name: Ogando, R. L. C.
name: Palmese, A.
name: Pan, Y. -C.
name: Plazas, A. A.
name: Pursiainen, M.
name: Romer, A. K.
name: Roodman, A.
name: Rozo, E.
name: Rykoff, E. S.
name: Sako, M.
name: Sanchez, E.
name: Scarpine, V.
name: Schindler, R.
name: Schubnell, M.
name: Scolnic, D.
name: Serrano, S.
name: Sevilla-Noarbe, I.
name: Sharp, R.
name: Smith, M.
name: Soares-Santos, M.
name: Sobreira, F.
name: Sommer, N. E.
name: Spinka, H.
name: Suchyta, E.
name: Sullivan, M.
name: Swann, E.
name: Tarle, G.
name: Thomas, D.
name: Thomas, R. C.
name: Troxel, M. A.
name: Tucker, B. E.
name: Uddin, S. A.
name: Walker, A. R.
name: Wester, W.
name: Wiseman, P.
name: Wolf, R. C.
name: Yanny, B.
name: Zhang, B.
name: Zhang, Y.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 SNe Ia 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 SNe Ia is based on a series of companion analyses and improvements covering SN Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat LCDM model we find a matter density Omega_m = 0.331 +_ 0.038. For a flat wCDM model, and combining our SN Ia constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state w = -0.978 +_ 0.059, and Omega_m = 0.321 +_ 0.018. For a flat w0waCDM model, and combining probes from SN Ia, CMB and baryon acoustic oscillations, we find w0 = -0.885 +_ 0.114 and wa = -0.387 +_ 0.430. These results are in agreement with a cosmological constant and with previous constraints using SNe Ia (Pantheon, JLA).