DRAFT
2021-02-16 16:48:10
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN..68....1H
ePESSTO+ spectroscopic classification of optical transients
Authors: L. Harvey, M. Magee, S. Prentice, M. Deckers (TCD), S. Schulze (Weizmann), J. Teffs (LJMU), S. Gonzalez-Gaitan (CENTRA), M. Dennefeld (IAP), S. Benetti (INAF), M. Gromadzki (Warsaw), J. Anderson (ESO), T. Müller Bravo (Southampton), T.-W. Chen (Stockholm), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron (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, and S. Srivastav (QUB).
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 3 normal Type Ia SNe, one SN Ia-91T, one young Type II SN showing flash features, and one object was classified as a CV.

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 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 Feb 15, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), and a custom classification tool.

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 Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2021cle [ATLAS21eft] 05:15:58.878 -38:47:38.08 SN Ia 0.059 +4 to +10 Redshift from classification software 05:15:58.878 -38:47:38.08 SN Ia 0.059
TNS 2021cpg [ATLAS21epl] 05:19:56.653 -33:58:51.94 SN Ia 0.077 max Redshift from SNID 05:19:56.653 -33:58:51.94 SN Ia 0.077
TNS 2021clw [ASASSN-21bg] 05:51:19.939 -50:34:57.14 SN Ia 0.0234 NGC 2115 0.023389 max Known host redshift 05:51:19.939 -50:34:57.14 SN Ia 0.0234
TNS 2021css [ASASSN-21bn] 08:13:40.428 -67:49:23.20 CV 08:13:40.428 -67:49:23.20 CV
TNS 2021dbg [ATLAS21gfy] 09:24:26.801 -06:34:53.09 SN II 0.0205 -13 Known host redshift 09:24:26.790 -06:34:53.15 SN II 0.02
TNS 2021ctn [ATLAS21fhx] 10:52:54.363 -00:46:21.33 SN Ia-91T-like 0.0946 -9 Known host redshift 10:52:54.363 -00:46:21.33 SN Ia-91T-like 0.0946

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