DRAFT
2021-12-26 16:54:13
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN.321....1P
ePESSTO+ spectroscopic classification of optical transients
Authors: J. Pineda , R.J. Bruch (Weizmann), J. Anderson (ESO), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), O. Yaron (Weizmann), D. Young (QUB), 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), T.-W. Chen (Stockholm), S. Benetti (INAF-OAPd)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This reports includes the classification of 1 Type Ia, 2 Type II. We encourage follow-up observations.

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), 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), the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 December 25, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).

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 2021agle [ATLAS21bnle] 02:02:10.802 -28:38:50.28 SN II 0.017 ESO 414- G 025 0.016682 ATLAS Known host redshift from NED. Possibly a Type IIb, but the main He lines are not yet observed; additional follow-up is required to determine conclusively. 02:02:10.810 -28:38:50.24 SN II 0.017
TNS 2021agmw [ASASSN-21wf] 05:14:43.526 -61:11:22.16 SN Ia 0.031 ESO 119- G 049 0.030718 ASSASSN Known host redshift from NED. 05:14:43.430 -61:11:20.98 SN Ia 0.031
TNS 2021adyl [ZTF21acnfoqn] 09:28:04.091 +29:59:27.21 SN II 0.028 IC 2479 0.027672 ZTF Known host redshift from NED. Could be a type IIn; more follow-up needed. 09:28:04.091 +29:59:27.21 SN II 0.028

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