DRAFT
2021-04-10 16:43:50
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: P. Pessi (ESO), A. Mitra (Nazarbayev Uni; KBTU), A. Holas, G. Csoernyei, C. Vogl, S. Taubenberger (MPA Garching), A. Floers (GSI), G. Pignata (UNAB), J. Teffs (Liverpool), M. Dennefeld (IAP), J. Anderson (ESO), T. Müller Bravo (Southampton), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), E. Zimmerman, O. Yaron, I. Manulis (Weizmann), D. Young (QUB)
Source Group: ePESSTO+
Abstract:
This report includes the classification of one Type Ia supernova.

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

The target was supplied by 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 April 9, using EFOSC2 and Grism 13 (3985-9315Å, 18Å resolution). The classification was done using SNID (Blondin & Tonry 2007; 2007ApJ...666.1024B) and GELATO (Harutyunyan et al. 2008; 2008A&A...488..383H).

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

The classified object is 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 2021iff [ASASSN-21ex] 08:40:57.912 -67:01:44.51 SN Ia 0.03 PGC 299844 ASAS-SN -7 to -4 Redshift from template matching with SNID. The spectrum is similar to those of normal Type Ia supernovae about a week before B-band maximum. SNID identifies SN 2006gr around day -6 as the best match for this object. 08:40:57.912 -67:01:44.51 SN Ia 0.03

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