First cosmological results using Type Ia supernovae from the Dark Energy Survey: Measurement of the Hubble constant

Published

Journal Article

© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We present an improved measurement of the Hubble constant (H0) using the 'inverse distance ladder' method, which adds the information from 207 Type Ia supernovae (SNe Ia) from the Dark Energy Survey (DES) at redshift 0.018 <0.85 to existing distance measurements of 122 low-redshift (z<0.07) SNe Ia (Low-z) and measurements ofBaryon Acoustic Oscillations (BAOs). Whereas traditional measurements of H0 with SNe Ia use a distance ladder of parallax and Cepheid variable stars, the inverse distance ladder relies on absolute distance measurements from the BAOs to calibrate the intrinsic magnitude of the SNe Ia.We find H0 = 67.8 1.3 km s-1 Mpc-1 (statistical and systematic uncertainties, 68 per cent confidence). Our measurement makes minimal assumptions about the underlying cosmological model, and our analysis was blinded to reduce confirmation bias. We examine possible systematic uncertainties and all are below the statistical uncertainties. Our H0 value is consistent with estimates derived from the Cosmic Microwave Background assuming a ΛCDM universe.

Full Text

Duke Authors

Cited Authors

  • MacAulay, E; Nichol, RC; Bacon, D; Brout, D; Davis, TM; Zhang, B; Bassett, BA; Scolnic, D; Möller, A; D'Andrea, CB; Hinton, SR; Kessler, R; Kim, AG; Lasker, J; Lidman, C; Sako, M; Smith, M; Sullivan, M; Abbott, TMC; Allam, S; Annis, J; Asorey, J; Avila, S; Bechtol, K; Brooks, D; Brown, P; Burke, DL; Calcino, J; Carnero Rosell, A; Carollo, D; Carrasco Kind, M; Carretero, J; Castander, FJ; Collett, T; Crocce, M; Cunha, CE; Da Costa, LN; Davis, C; De Vicente, J; Diehl, HT; Doel, P; Drlica-Wagner, A; Eifler, TF; Estrada, J; Evrard, AE; Filippenko, AV; Finley, DA; Flaugher, B; Foley, RJ; Fosalba, P; Frieman, J; Galbany, L; García-Bellido, J; Gaztanaga, E; Glazebrook, K; González-Gaitán, S; Gruen, D; Gruendl, RA; Gschwend, J; Gutierrez, G; Hartley, WG; Hollowood, DL; Honscheid, K; Hoormann, JK; Hoyle, B; Huterer, D; Jain, B; James, DJ; Jeltema, T; Kasai, E; Krause, E; Kuehn, K; Kuropatkin, N; Lahav, O; Lewis, GF; Li, TS; Lima, M; Lin, H; Maia, MAG; Marshall, JL; Martini, P; Miquel, R; Nugent, P; Palmese, A; Pan, YC; Plazas, AA; Romer, AK; Roodman, A; Sanchez, E; Scarpine, V; Schindler, R; Schubnell, M; Serrano, S; Sevilla-Noarbe, I; Sharp, R; Soares-Santos, M; Sobreira, F; Sommer, NE; Suchyta, E; Swann, E

Published Date

  • June 1, 2019

Published In

Volume / Issue

  • 486 / 2

Start / End Page

  • 2184 - 2196

Electronic International Standard Serial Number (EISSN)

  • 1365-2966

International Standard Serial Number (ISSN)

  • 0035-8711

Digital Object Identifier (DOI)

  • 10.1093/mnras/stz978

Citation Source

  • Scopus