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Classification of 15 DES supernovae by OzDES

ATel #8464; F. Yuan, B. E. Tucker (Australian National University), C. Lidman (Australian Astronomical Observatory), P. Martini (Ohio State University), Julia Gshwend (Observatório Nacional / LIneA), A. Moller, B. Zhang (Australian National University), R. C. Smith (NOAO/CTIO), M. Schubnell (University of Michigan), R. Kessler, J. Lasker, D. Scolnic (University of Chicago), D. J. Brout, L. Gladney, M. Sako, R. C. Wolf (University of Pennsylvania), P. J. Brown, K. Krisciunas, N. Suntzeff (Texas A&M University), R. Nichol, A. Papadopoulos (University of Portsmouth), M. Childress, C. D'Andrea, M. Smith, M. Sullivan (University of Southampton), 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, A. G. Kim, R. C. Thomas (Lawrence Berkeley National Laboratory), K. Barbary, J. S. Bloom, D. Goldstein, P. Nugent, S. Perlmutter (Lawrence Berkeley National Laboratory + University of California, Berkeley), R. J. Foley, Y.-C. Pan (University of Illinois), R. Casas, F. J. Castander (ICE, IEEC/CSIC, Barcelona), S. Desai, K. Paech (Ludwig Maximilians University, Munich)
on 24 Dec 2015; 18:43 UT
Credential Certification: Brad Tucker (brad@mso.anu.edu.au)

Subjects: Optical, Supernovae

Referred to by ATel #: 8707

We report new spectroscopic classifications by OzDES of 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 SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and superfit (Howell and Wang, 2002, BAAS, 34, 1256), the details of which are reported in the table below.

 
Name       | RA (J2000)| Dec (J2000)|Discovery  |Discovery| Spectrum  |Redshift| Type | Phase  |Notes 
           |           |            |Date (UT)  |Mag (r)  | Date (UT) |        |      |        | 
DES15C3mpk |03:34:38.15|-28:23:52.3 |2015 Nov 13|  22.6   |2015 Dec 12|  0.182 |  Ia  |+10 days|a,best match to 91T 
DES15E1nei |00:32:20.08|-43:44:27.0 |2015 Nov 29|  22.5   |2015 Dec 13|  0.313 |  Ia  |   max  |a,best match to 91T 
DES15E2nlz |00:35:51.33|-44:40:36.1 |2015 Nov 30|  24.0   |2015 Dec 12|  0.410 |  Ia  |-5 days | 
DES15C1nfb |03:37:49.93|-27:01:10.6 |2015 Nov 29|  22.4   |2015 Dec 13|  0.130 |  Ia  |   max  | 
DES15C2njv |03:36:29.87|-28:34:11.5 |2015 Nov 30|  21.8   |2015 Dec 14|  0.181 |  Ia  |   max  | 
DES15X2nkl |02:23:19.33|-06:31:34.7 |2015 Nov 30|  23.3   |2015 Dec 14|  0.304 |  Ia  |   max  |a 
DES15X2mzv |02:21:59.04|-06:29:53.5 |2015 Nov 20|  23.1   |2015 Dec 14|  0.313 |  Ia  |   max  |a 
DES15X3nad |02:23:54.34|-04:10:06.6 |2015 Nov 29|  24.2   |2015 Dec 12|  0.100 |  II  |   max  | 
DES15X3naa |02:26:58.48|-04:58:03.8 |2015 Nov 29|  23.6   |2015 Dec 12|  0.331 |  Ia  |-4 days |a 
DES15C1mqf |03:39:16.47|-27:09:20.2 |2015 Nov 13|  21.6   |2015 Dec 13|  0.111 |  Ia  |+3 weeks|unusual, strong feature at 6400 A (rest-frame), possible Ia-csm.  Encourage follow-up. 
DES15C1mvy |03:40:11.30|-26:58:32.2 |2015 Nov 13|  24.3   |2015 Dec 13|  0.320 |  Ia  |   max  | 
DES15X2mku |02:20:28.42|-06:05:44.8 |2015 Nov 05|  22.0   |2015 Dec 14|  0.090 |  II  |+1 month| 
DES15X2mpm |02:22:25.40|-06:08:59.5 |2015 Nov 05|  24.0   |2015 Dec 14|  0.235 |  Ia  |+2 week |a 
DES15X3mpq |02:24:52.26|-03:39:55.3 |2015 Nov 13|  22.4   |2015 Dec 12|  0.188 |  II  |+1 month|a 
DES15E1neh |00:26:40.77|-42:57:50.6 |2015 Nov 29|  22.6   |2015 Dec 13|  0.390 |  Ia? |   max  | 
 
a). Redshift from galaxy emission features