First Cosmology Results Using Type Ia Supernovae from the Dark Energy Survey: Photometric Pipeline and Light-curve Data Release

Journal Article (Journal Article)

We present griz light curves of 251 SNe Ia from the first 3 years of the Dark Energy Survey Supernova Program's (DES-SN) spectroscopically classified sample. The photometric pipeline described in this paper produces the calibrated fluxes and associated uncertainties used in the cosmological parameter analysis by employing a scene modeling approach that simultaneously models a variable transient flux and temporally constant host galaxy. We inject artificial point sources onto DECam images to test the accuracy of our photometric method. Upon comparison of input and measured artificial supernova fluxes, we find that flux biases peak at 3 mmag. We require corrections to our photometric uncertainties as a function of host galaxy surface brightness at the transient location, similar to that seen by the DES Difference Imaging Pipeline used to discover transients. The public release of the light curves can be found at

Full Text

Duke Authors

Cited Authors

  • Brout, D; Sako, M; Scolnic, D; Kessler, R; D'Andrea, CB; Davis, TM; Hinton, SR; Kim, AG; Lasker, J; Macaulay, E; Möller, A; Nichol, RC; Smith, M; Sullivan, M; Wolf, RC; Allam, S; Bassett, BA; Brown, P; Castander, FJ; Childress, M; Foley, RJ; Galbany, L; Herner, K; Kasai, E; March, M; Morganson, E; Nugent, P; Pan, YC; Thomas, RC; Tucker, BE; Wester, W; Abbott, TMC; Annis, J; Avila, S; Bertin, E; Brooks, D; Burke, DL; Rosell, AC; Kind, MC; Carretero, J; Crocce, M; Cunha, CE; Costa, LND; Davis, C; Vicente, JD; Desai, S; Diehl, HT; Doel, P; Eifler, TF; Flaugher, B; Fosalba, P; Frieman, J; Garcia-Bellido, J; Gaztanaga, E; Gerdes, DW; Goldstein, DA; Gruen, D; Gruendl, RA; Gschwend, J; Gutierrez, G; Hartley, WG; Hollowood, DL; Honscheid, K; James, DJ; Kuehn, K; Kuropatkin, N; Lahav, O; Li, TS; Lima, M; Marshall, JL; Martini, P; Miquel, R; Nord, B; Plazas, AA; Roodman, A; Rykoff, ES; Sanchez, E; Scarpine, V; Schindler, R; Schubnell, M; Serrano, S; Sevilla-Noarbe, I; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, MEC; Tarle, G; Thomas, D; Tucker, DL; Walker, AR; Yanny, B; Zhang, Y

Published Date

  • March 20, 2019

Published In

Volume / Issue

  • 874 / 1

Electronic International Standard Serial Number (EISSN)

  • 1538-4357

International Standard Serial Number (ISSN)

  • 0004-637X

Digital Object Identifier (DOI)

  • 10.3847/1538-4357/ab06c1

Citation Source

  • Scopus