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.
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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