DRAFT
2021-02-12 17:11:31
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN..61....1P
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Prentice, M. Deckers, J. Terwel, M. Magee (TCD), C. Barbarino (Stockholm), G. Pignata (UANB), T. Müller Bravo (Southampton), S. Benetti (INAF), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron, N. L. Strotjohann (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith, S. J. Smartt, J. Gillanders, O. McBrien, S. Srivastav (QUB)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 3 Type Ia SNe and 1 Type II SN. For AT2021ckl the observed spectrum is consistent with only host galaxy light. The acquisition image of ZTF21aajezvp did not show any source to take a spectrum of.

ePESSTO+, the advanced Public ESO Spectroscopic Survey for Transient Objects (Smartt et al. 2015 2015A&A...579A..40S), reports the following supernova classifications.

Targets were supplied by the ATLAS survey (Smith et al. 2020 2020arXiv200309052S) and the Zwicky Transient Facility ZTF (Bellm et al. 2019 2019PASP..131a8002B) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3a..26S) and by the ALeRCE broker (Forster et al. 2020 https://arxiv.org/abs/2008.03303).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 Feb. 11, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) and GELATO (Harutyunyan et al. 2008 2008A&A...488..383H).

The classification spectra and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

The classified objects are listed in the Related Objects table below.

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2021coe [ZTF21aaisnth] 13:19:54.193 +00:30:37.83 SN Ia-pec 0.054 WISEA J131954.18+003043.3 0.0544 max z from host, similar to 91T-like and 00cx-like SN 13:19:54.193 +00:30:37.83 SN Ia-pec 0.054
Other 10:12:58.495 +15:04:23.77 No source visible in acquisition image
TNS 2021cku [ATLAS21eek] 12:58:41.642 -30:33:39.12 SN Ia 0.043 max z from snid 12:58:41.642 -30:33:39.12 SN Ia 0.043
TNS 2021cpi [ATLAS21etj] 14:51:57.421 +16:13:18.67 SN II 0.055 WISEA J145157.76+161324.3 0.055322 young z from host, blue and featureless spectrum 14:51:57.434 +16:13:18.71 SN II 0.055
TNS 2021cky [ATLAS21eev] 15:17:35.403 +18:07:05.06 SN Ia-pec 0.073 WISEA J151735.40+180705.1 0.073437 max z from host, similar to 91T-like and 00cx-like SN 15:17:35.403 +18:07:05.06 SN Ia-pec 0.073
TNS 2021ckl 15:05:43.842 +09:58:21.60 Galaxy 0.044 2MASX J15054383+0958216 0.043971 Consistent with only host galaxy light 15:05:43.842 +09:58:21.60 Galaxy 0.044

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