Spectroscopic Classification of DES14X3taz as a SLSN-I
ATel #7190; 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), 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 (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)
on 9 Mar 2015; 11:29 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 DES14X3taz 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). 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) | | | |
DES14X3taz |02 28 04.46|-04 05 12.7 |2014 Dec 09|23.1 |2015 Jan 26, 2015 Feb 06|0.60 |SLSNe | | a,b
a) Redshift comes from SN template matching; no galaxy lines are seen
b) The spectra are good matches to literature hydrogren-free SLSNe in the red, but the second spectrum shows some differences at <3500A rest-frame. There are also possible matches to SN2006jc-like SNe at z~0.42, but without the He present in those events.
