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OzDES Spectroscopic Classification of 5 Supernovae From DES

ATel #6520; F. Yuan (Australian National University); C. Lidman (Australian Astronomical Observatory); T. M. Davis, A. King, D. Parkinson (University of Queensland); A. Carnero, J. Gschwend (Observatorio Nacional / Laborat´orio Interinstitucional de e-Astronomia); G. Lewis (University of Sydney); R. Maartens (University of the Western Cape); R. Gupta, E. Kovacs, S. Kuhlmann, H. Spinka (Argonne National Laboratory); E. Ahn, D. A. Finley, J. Frieman, J. Marriner, W. Wester (Fermilab); G. Aldering, J. S. Bloom, A. G. Kim, R. C. Thomas (Lawrence Berkeley National Laboratory); K. Barbary, D. Goldstein, P. Nugent, S. Perlmutter (Lawrence Berkeley National Laboratory + University of California, Berkeley); R. J. Foley (University of Illinois); F. J. Castander (ICE, IEEC/CSIC, Barcelona); S. Desai, K. Paech (Ludwig Maximilians University, Munich); R. C. Smith (NOAO/CTIO); M. Schubnell (University of Michigan); R. Kessler, D. Scolnic (University of Chicago); R. A. Covarrubias (University of Illinois / NCSA); R. C. Wolf, J. A. Fischer, J.-L. Fischer, L. Gladney, M. March, M. Sako (University of Pennsylvania); P. J. Brown, K. Krisciunas, N. Suntzeff (Texas A&M University); C. D'Andrea, R. Nichol, A. Papadopoulos (University of Portsmouth); M. Smith, M. Sullivan (University of Southampton);
on 1 Oct 2014; 12:03 UT
Credential Certification: Fang Yuan (fang.yuan@anu.edu.au)

Subjects: Optical, Supernovae

We report spectroscopic classification by OzDES of 5 supernovae discovered by the Dark Energy Survey (ATel #4668). The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT). Object classification was performed using superfit (Howell and Wang, 2002, BAAS, 34, 1256) and SNID (Blondin & Tonry, 2007, ApJ, 666, 1024), the details of which are reported in the table below.

 
Name         | RA (J2000)   | Dec (J2000)  | Discovery Date (UT) | Discovery r Mag | Spectrum Date (UT)  | redshift | Type    | Phase | Notes | 
 
DES14E1anf   | 00 33 56.13  | -43 20 59.1  | 2014 Sep 02         |  21.6           | 2014 Sep 17,18,19,20| 0.149    | Type Ia |  +2-5 |       | 
DES14E1tb    | 00 28 48.01  | -43 33 44.2  | 2014 Aug 15         |  22.9           | 2014 Sep 17,18,20   | 0.37     | Type Ia |  ~+10 | (1)   | 
DES14E2u     | 00 37 51.13  | -43 43 17.2  | 2014 Aug 17         |  23.0           | 2014 Sep 17,19      | 0.292    | Type Ia |  ~+15 | (1,2) | 
DES14X2ags   | 02 24 00.58  | -06 29 51.8  | 2014 Sep 03         |  21.6           | 2014 Sep 18         | 0.30     | Type Ia |  +3   |       | 
DES14S2qb    | 02 43 59.72  | -00 54 22.1  | 2014 Aug 20         |  22.1           | 2014 Sep 18         | 0.24     | Type Ia |  +20  |       | 
 
 
(1) Spectra contain significant host galaxy light; phases determined from light curves. 
(2) Independently confirmed as a Type Ia in ATel #6515.  Phase, redshift, and type are in agreement.