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Discovery and Classification of DES15C2ir by SALT

ATel #7973; E. Kasai, B. Bassett (University of Cape Town, AIMS, SAAO), S. Crawford, P. Vaisanen (SALT, SAAO), M. Smith (University of Southampton), 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), R. Nichol, A. Papadopoulos (University of Portsmouth), C. D'Andrea, 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)
on 1 Sep 2015; 09:35 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mathew Smith (matsmith2@gmail.com)

Subjects: Optical, Supernovae

We report optical spectroscopy of a supernova candidate discovered by the Dark Energy Survey (ATel #4668). The spectrum (400-850nm) of DES15C2ir was obtained using the Robert Stobie Spectrograph (RSS) on the Southern African Large Telescope (SALT). Classification was performed using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024), revealing this event to be a type Ia supernova at z=0.058, 3 days after maximum light.

Name       | RA (J2000)| Dec (J2000)|Discovery  |Discovery|Spectrum   |Redshift| Type | Phase |Notes 
           |           |            |Date (UT)  |Mag (r)  |Date (UT)  |        |      |       | 
DES15C2ir  |03:40:55.09|-28:41:19.1 |2015 Aug 15| 19.7    |2015 Aug 24| 0.058  | Ia   |  +3   |a 
a) Redshift determined from galaxy emission features.