OzDES Spectroscopic Classification of 5 Supernovae From DES
ATel #6520; F. Yuan (Australian National University); C. Lidman (Australian Astronomical Observatory); T. M. Davis, A. King, D. Parkinson (University of Queensland); A. Carnero, J. Gschwend (Observatorio Nacional / Laborat´orio Interinstitucional de e-Astronomia); G. Lewis (University of Sydney); 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, J. S. Bloom, A. G. Kim, R. C. Thomas (Lawrence Berkeley National Laboratory); K. Barbary, 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); R. C. Wolf, J. A. Fischer, J.-L. Fischer, L. Gladney, M. March, M. Sako (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. Smith, M. Sullivan (University of Southampton);
on 1 Oct 2014; 12:03 UT
Credential Certification: Fang Yuan (fang.yuan@anu.edu.au)
Subjects: Optical, Supernovae
We report spectroscopic classification by OzDES of 5 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 superfit (Howell and Wang, 2002, BAAS, 34, 1256) and SNID (Blondin & Tonry, 2007, ApJ, 666, 1024), the details of which are reported in the table below.
Name | RA (J2000) | Dec (J2000) | Discovery Date (UT) | Discovery r Mag | Spectrum Date (UT) | redshift | Type | Phase | Notes |
DES14E1anf | 00 33 56.13 | -43 20 59.1 | 2014 Sep 02 | 21.6 | 2014 Sep 17,18,19,20| 0.149 | Type Ia | +2-5 | |
DES14E1tb | 00 28 48.01 | -43 33 44.2 | 2014 Aug 15 | 22.9 | 2014 Sep 17,18,20 | 0.37 | Type Ia | ~+10 | (1) |
DES14E2u | 00 37 51.13 | -43 43 17.2 | 2014 Aug 17 | 23.0 | 2014 Sep 17,19 | 0.292 | Type Ia | ~+15 | (1,2) |
DES14X2ags | 02 24 00.58 | -06 29 51.8 | 2014 Sep 03 | 21.6 | 2014 Sep 18 | 0.30 | Type Ia | +3 | |
DES14S2qb | 02 43 59.72 | -00 54 22.1 | 2014 Aug 20 | 22.1 | 2014 Sep 18 | 0.24 | Type Ia | +20 | |
(1) Spectra contain significant host galaxy light; phases determined from light curves.
(2) Independently confirmed as a Type Ia in ATel #6515. Phase, redshift, and type are in agreement.