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GTC Classification of DES Supernova Candidates

ATel #7199; F. J. Castander, R. Casas (ICE, IEEC/CSIC, Barcelona), D. Garcia-Alvarez (SA) and D. Perez-Valladares (GTC operations, IAC), R. Miquel (IFAE, Barcelona), M. Smith (University of Southampton), 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 (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), D. J. Brout, J. A. Fischer, L. Gladney, M. March, M. Sako, R. C. Wolf (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. Sullivan (University of Southampton), R. Maartens (University of the Western Cape), R. Gupta, E. Kovacs, S. Kuhlmann, H. Spinka (Argonne National Laboratory)
on 10 Mar 2015; 17:48 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mathew Smith (matsmith2@gmail.com)

Subjects: Optical, Supernovae

We report optical spectroscopy and classification of 3 SN candidates discovered by the Dark Energy Survey. The spectra (490-920 nm) were obtained using OSIRIS on the Gran Telescopio CANARIAS (GTC), and classification was performed using SuperFit (Howell et al. 2005, Ap.J. 634, 1190) and SNID (Blondin & Tonry, 2007, Ap.J., 666, 1024). Details of the observations and classification are given below.

 
Name       |RA (J2000) |Dec (J2000) |Disc.      |Disc.  |Spectrum   |Redshift|Type  |Phase|Notes 
           |           |            |Date (UT)  |Mag (r)|Date (UT)  |        |      |     | 
DES14S1rag |02 50 15.02|-00 44 41.9 |2014 Dec 09|22.7   |2014 Dec 18|0.47    | Ia   |+1   | 
DES14S2pon |02 41 12.39|-00 45 51.7 |2014 Nov 25|24.0   |2014 Dec 25|0.414   | Ia?  |+10  |a 
DES14S2qri |02 43 32.14|-01 07 34.2 |2014 Nov 18|23.2   |2015 Jan 21|1.5     | SLSN |     |b 
  
a) Redshift from galaxy emission lines 
b) Excellent match to SCP06F6