First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Survey Overview and Supernova Spectroscopy
Creators: name: D'Andrea, C. B.
name: Smith, M.
name: Sullivan, M.
name: Nichol, R. C.
name: Thomas, R. C.
name: Kim, A. G.
name: Möller, A.
name: Sako, M.
name: Castander, F. J.
name: Filippenko, A. V.
name: Foley, R. J.
name: Galbany, L.
name: González-Gaitán, S.
name: Kasai, E.
name: Kirshner, R. P.
name: Lidman, C.
name: Scolnic, D.
name: Brout, D.
name: Davis, T. M.
name: Gupta, R. R.
name: Hinton, S. R.
name: Kessler, R.
name: Lasker, J.
name: Macaulay, E.
name: Wolf, R. C.
name: Zhang, B.
name: Asorey, J.
name: Avelino, A.
name: Bassett, B. A.
name: Calcino, J.
name: Carollo, D.
name: Casas, R.
name: Challis, P.
name: Childress, M.
name: Clocchiatti, A.
name: Crawford, S.
name: Glazebrook, K.
name: Goldstein, D. A.
name: Graham, M. L.
name: Hoormann, J. K.
name: Kuehn, K.
name: Lewis, G. F.
name: Mandel, K. S.
name: Morganson, E.
name: Muthukrishna, D.
name: Nugent, P.
name: Pan, Y. -C.
name: Pursiainen, M.
name: Sharp, R.
name: Sommer, N. E.
name: Swann, E.
name: Tucker, B. E.
name: Uddin, S. A.
name: Wiseman, P.
name: Zheng, W.
name: Abbott, T. M. C.
name: Annis, J.
name: Avila, S.
name: Bechtol, K.
name: Bernstein, G. M.
name: Bertin, E.
name: Brooks, D.
name: Burke, D. L.
name: Rosell, A. Carnero
name: Kind, M. Carrasco
name: Carretero, J.
name: Cunha, C. E.
name: da Costa, L. N.
name: Davis, C.
name: De Vicente, J.
name: Diehl, H. T.
name: Eifler, T. F.
name: Estrada, J.
name: Frieman, J.
name: García-Bellido, J.
name: Gaztanaga, E.
name: Gerdes, D. W.
name: Gruen, D.
name: Gruendl, R. A.
name: Gschwend, J.
name: Gutierrez, G.
name: Hartley, W. G.
name: Hollowood, D. L.
name: Honscheid, K.
name: Hoyle, B.
name: James, D. J.
name: Johnson, M. W. G.
name: Johnson, M. D.
name: Kuropatkin, N.
name: Li, T. S.
name: Lima, M.
name: Maia, M. A. G.
name: Marshall, J. L.
name: Martini, P.
name: Menanteau, F.
name: Miller, C. J.
name: Miquel, R.
name: Neilsen, E.
name: Ogando, R. L. C.
name: Plazas, A. A.
name: Romer, A. K.
name: Sanchez, E.
name: Scarpine, V.
name: Schubnell, M.
name: Serrano, S.
name: Sevilla-Noarbe, I.
name: Sobreira, F.
name: Suchyta, E.
name: Tarle, G.
name: Tucker, D. L.
name: Wester, W.
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 spectroscopy from the first three seasons of the Dark Energy Survey Supernova Program (DES-SN). We describe the supernova spectroscopic program in full: strategy, observations, data reduction, and classification. We have spectroscopically confirmed 307 supernovae, including 251 type Ia supernovae (SNe Ia) over a redshift range of $0.017 &lt; z &lt; 0.85$. We determine the effective spectroscopic selection function for our sample, and use it to investigate the redshift-dependent bias on the distance moduli of SNe Ia we have classified. We also provide a full overview of the strategy, observations, and data products of DES-SN, which has discovered 12,015 likely supernovae during these first three seasons. The data presented here are used for the first cosmology analysis by DES-SN ('DES-SN3YR'), the results of which are given in DES Collaboration (2018a).
description: 25 pages, 14 figures, 8 tables. Submitted to AJ