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Classification of 18 DES supernova with OzDES

ATel #11679; E. S. Swann (University of Portsmouth), G. F. Lewis (University of Sydney), C. Lidman (Australian Astronomical Observatory + Australian National University), F. H. Panther, R. Sharp, N. E. Sommer, B. E. Tucker (Australian National University), D. Muthukrishna (University of Cambridge), R. Casas, F. J. Castander (ICE, IEEC/CSIC, Barcelona), A. Papadopoulos (Cyprus University), E. Morganson (University of Illinois at Urbana-Champaign), S. Desai, K. Paech (Ludwig Maximilians University, Munich), R. C. Smith (NOAO/CTIO), M. Schubnell (University of Michigan), A. Moller, R., F. Yuan, B. Zhang (Mount Stromlo Observatory, Australian National University), T. M. Davis, S. Hinton (University of Queensland), J. Asorey (Swinburne University of Technology), S. Uddin (Purple Mountain Observatory), R. Kessler, J. Lasker, D. Scolnic (University of Chicago), D. J. Brout, C. D'Andrea, L. Gladney, M. March, M. Sako, R. C. Wolf (University of Pennsylvania), P. J. Brown, K. Krisciunas, N. Suntzeff (Texas A&M University), E. Macaulay, R. Nichol (University of Portsmouth), R. Maartens (University of the Western Cape), M. Childress, S. Prajs, M. Smith, M. Sullivan (University of Southampton), E. Kovacs, S. Kuhlmann, H. Spinka (Argonne National Laboratory), E. Ahn, D. A. Finley, J. Frieman, J. Marriner, W. Wester (Fermilab), G. Aldering, R. Gupta, 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 California, Santa Cruz)
on 2 Jun 2018; 07:02 UT
Credential Certification: Brad Tucker (brad@mso.anu.edu.au)

Subjects: Optical, Supernovae

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), superfit (Howell and Wang, 2002, BAAS, 34, 1256) and DASH (https://github.com/daniel-muthukrishna/DASH), 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)  |        |        |          | 
DES17C3evg |03:31:30.16|-28:14:29.7 |2017 Nov 18|  23.9   |2017 Dec 18| 0.338  |  SNIa  | +1 week  | a 
DES17X3gjl |02:24:41.49|-05:03:02.3 |2017 Dec 05|  22.6   |2017 Dec 18| 0.200  |  SNIa  | near-max | a 
DES17C3fzp |03:27:27.76|-28:30:56.9 |2017 Dec 09|  23.5   |2017 Dec 18| 0.39   |  SNIa? | near-max | 
DES17C1ffz |03:35:52.08|-26:59:29.6 |2017 Nov 13|  23.7   |2017 Dec 19| 0.091  |  SNIbc | post-max | a, b 
DES17X2cng |02:24:18.30|-06:08:09.8 |2017 Nov 18|  24.6   |2016 Dec 19| 0.267  |  SNIa  | near-max | a 
DES17X2fql |02:22:35.65|-06:28:07.4 |2017 Nov 24|  23.5   |2017 Dec 19| 0.317  |  SNIa  | +1 week  | a 
DES17C2fnw |03:33:49.48|-29:36:37.6 |2017 Nov 24|  22.9   |2017 Dec 21| 0.16   |  SNIa  | +1 week  | b 
DES17C2gjd |03:35:03.75|-28:41:37.4 |2017 Dec 05|  22.3   |2017 Dec 21| 0.37   |  SNIa  | near-max |  
DES17E1fmy |00:29:17.66|-42:29:28.3 |2017 Nov 23|  24.1   |2017 Dec 22| 0.151  |  SNIa  | +1 week  | a 
DES17E1fgl |02:32:09.62|-42:38:49.3 |2017 Nov 23|  23.2   |2017 Dec 22| 0.561  |SLSN-II?| pre-max  | a 
DES17C2gjg |03:39:26.14|-28:51:05.9 |2017 Dec 05|  22.1   |2017 Dec 22| 0.345  |  SNIa  | near-max | a 
DES17X1gcm |02:19:27.94|-04:54:47.5 |2017 Dec 04|  21.1   |2017 Dec 23| 0.199  |  SNIa  | near-max | a 
DES17X1gep |02:19:20.08|-05:10:21.3 |2017 Dec 04|  22.3   |2017 Dec 23| 0.384  |  SNIa  | +1 week  | a 
DES17E2gjj |00:38:09.24|-44:28:30.7 |2017 Dec 05|  23.0   |2017 Dec 23| 0.43   |  SNIa  | near-max |  
DES17E2gsy |00:40:43.84|-43:24:37.2 |2017 Dec 11|  22.0   |2017 Dec 23| 0.247  |  SNIa  | near-max | a 
DES17X1hcy |02:18:54.17|-04:02:58.4 |2017 Dec 13|  23.3   |2017 Dec 23| 0.337  |  SNIa  | -1 week  | a 
DES17C1gye |03:35:16.58|-27:49:22.4 |2017 Dec 11|  22.9   |2017 Dec 24| 0.316  |  SNIa  | near-max | a 
DES17C1gyg |03:33:59.88|-26:50:36.7 |2017 Dec 11|  23.6   |2017 Dec 24| 0.609  |  SNIa? | near-max | a 
 
a). Redshift from galaxy features 
b). Classification and redshift matches that reported in ATEL #11151