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 April 18, 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.
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 | 2021jyr [ATLAS21mws] | 09:33:42.160 | +09:55:36.37 | SN Ia | 0.104 | SDSS J093341.59+095527.4 | 0.10377 | ATLAS | at max | Redshift from known host. GELATO finds a good match with SN 2002bo at -2.1 d. The supernova is located very far from its host galaxy at a projected distance of 23.0 kpc. | 09:33:42.145 | +09:55:36.54 | SN Ia | 0.104 |
TNS | 2021kax [ZTF21aavozbk] | 12:59:50.599 | +22:43:23.78 | SN Ia | 0.072 | SDSS J125950.57+224325.2 | 0.072 | ZTF, ATLAS | -7 to -4 | Redshift from narrow host galaxy H-alpha. GELATO finds a good match with SN 2003du at -4.9 d. | 12:59:50.568 | +22:43:23.85 | SN Ia | 0.072 |
TNS | 2021jvf [ATLAS21mwj] | 20:43:58.326 | -20:40:29.72 | SN Ic | 0.0277 | ESO 597- G 032 | 0.027712 | ATLAS | at max | Redshift from known host. GELATO finds a good match with SN 1994I at maximum. | 20:43:58.361 | -20:40:29.60 | SN Ic | 0.0277 |
TNS | 2021kfo [ZTF21aaweqit] | 16:15:00.800 | +06:13:19.07 | SN II | 0.06 | SDSS J161500.69+061320.4 | ZTF | +4 to +7 | Redshift from template matching with GELATO. We estimate a phase of around 4 d after explosion from the ZTF light curve. | 16:15:00.811 | +06:13:19.17 | SN II | 0.06 |
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