DRAFT
2021-01-05 19:20:10
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN...6....1G
ePESSTO+ spectroscopic classification of optical transients
Authors: J. Gillanders, S. Srivastav, M. Fulton, L. J. Shingles, K. W. Smith (QUB), S. Prentice (TCD), C. Gutierrez (Turku), S. Benetti (INAF), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), E. Zimmerman, 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), S. J. Smartt, O. McBrien (QUB)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 9 Type Ia's and 4 Type II's. SN2020acsk is a peculiar Type II supernova, showing features resembling that of SN-IIb close to peak, as well as SN1987A. 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 All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S) and from the Catalina Real-time Transient Survey (CRTS; Drake et al. 2009, ApJ, 696, 870; http://crts.caltech.edu/).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 January 04, 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) and Superfit (Howell et al. 2005 2005ApJ...634.1190H).

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 2020acpg [ATLAS20bhzr] 03:01:03.340 -37:02:13.67 SN Ia 0.07 GALEXASC J030103.43-370212.0 ATLAS +11 to +20 Redshift acquired from SNID. 03:01:03.340 -37:02:13.67 SN Ia 0.07
TNS 2020acph [ATLAS20bhzs] 11:01:40.753 +22:05:37.95 SN Ia 0.12 SDSS J110140.60+220536.8 ATLAS +11 to +20 Noisy spectrum, however, the Si II line (6150) has a profile and strength similar to an SNIa. Redshift acquired from SNID. 11:01:40.755 +22:05:37.97 SN Ia 0.12
TNS 2020acpi [ATLAS20bhzu] 11:35:46.559 -49:02:12.43 SN II 0.017 ESO 216- G 021 0.016958 ATLAS > +20 11:35:46.559 -49:02:12.43 SN II 0.017
TNS 2020acsk [ATLAS20bikf] 09:42:51.546 +28:59:57.03 SN IIb 0.029 UGC 05185 NOTES01 0.029012 ATLAS –3 to +3 Spectrum matches well with SN-IIb at around peak, with some features resembling that of SN1987A. 09:42:51.546 +28:59:57.03 SN IIb 0.029
TNS 2020adhh 04:43:46.180 +28:58:10.53 SN II 0.022 UGC 3142 0.02166 CRTS –3 to +3 Noisy spectrum. Obtained fits with SNII and H-alpha from host at redshift z = 0.022. 04:43:46.180 +28:58:10.53 SN II 0.022
TNS 2020adlh [ASASSN-20qh] 13:38:26.170 -31:15:52.09 SN Ia 0.036 ESO 444-IG 089 NED02 0.038013 ASAS-SN +11 to +20 13:38:26.170 -31:15:52.09 SN Ia 0.036
TNS 2020adnu [ASASSSN-20qi] 11:38:08.450 -32:51:05.98 SN Ia 0.031 WISEA J113808.29-325108.4 0.030625 ASAS-SN –3 to +3 11:38:08.450 -32:51:05.98 SN Ia 0.031
TNS 2020adnw [ATLAS20bjhw] 13:15:06.311 -37:08:21.90 SN Ia 0.036 ESO 382- G 023 0.036418 ATLAS –3 to +3 13:15:06.311 -37:08:21.90 SN Ia 0.036
TNS 2020adrp [ATLAS20bjmg] 03:10:57.350 -40:43:07.19 SN Ia 0.06 ATLAS –3 to +3 Redshift acquired from SNID. 03:10:57.350 -40:43:07.19 SN Ia 0.06
TNS 2020aeph [ATLAS20bjqg] 12:33:08.483 -38:52:40.34 SN IIP 0.03 ATLAS > +20 ATLAS lightcurve has been flat over 30 days, suggesting this may be an SN-IIP. Redshift acquired from SNID. 12:33:08.483 -38:52:40.34 SN IIP 0.03
TNS 2020aeqv [ATLAS20bjvf] 10:52:27.186 -32:19:17.57 SN Ia 0.06 2MASX J10522638-3219088 ATLAS –3 to +3 Redshift acquired from SNID. 10:52:27.186 -32:19:17.57 SN Ia 0.06
TNS 2020aerm [ATLAS20bjxg] 11:04:13.775 -33:58:51.35 SN Ia 0.09 ATLAS –3 to +3 Redshift acquired from SNID. 11:04:13.775 -33:58:51.35 SN Ia 0.09
TNS 2020adpg [ATLAS20bjig] 22:31:12.088 -15:01:32.08 SN Ia 0.03 WISEA J223111.61-150138.3 ATLAS –3 to +3 Redshift acquired from SNID. 22:31:12.088 -15:01:32.08 SN Ia 0.03

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