DRAFT
2020-10-29 16:41:01
Type: Object/s-Discovery/Classification
Bibcode: 2020TNSAN.212....1I
ePESSTO+ spectroscopic classification of optical transients
Authors: N. Ihanec, M. Gromadzki (Warsaw), T. Wevers (ESO), N. Elias-Rosa (INAF-OAPd/CSIC-ICE), P. Wise (Southampton), T.-W. Chen, T. Schweyer (Stockholm), S. Benetti (INAF-OAPd), J. Anderson (ESO), T. Muller Bravo (Southampton), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, A. Heinze, H. Weiland, H. Flewelling (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith, S. J. Smartt, O. McBrien, S. Srivastav (QUB)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 4 Type Ia's, 1 Type II and one blue featureless transient.

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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2020 October 28, 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.

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 2020uew [ATLAS20bbum] 03:19:23.878 -29:59:05.61 noisy spectrum that appears blue and featureless 03:19:23.870 -29:59:05.68 SLSN-I 0.22367
TNS 2020uve [ZTF20acgnelh] 02:12:30.112 -22:28:22.16 SN II 0.04 +1 to +2 weeks redshift from SNID 02:12:30.112 -22:28:22.16 SN II 0.04
TNS 2020xsx [ATLAS20bedh] 07:59:32.246 -16:19:44.23 SN Ia 0.1 +7 to +10 days redshift from SNID 07:59:32.246 -16:19:44.23 SN Ia 0.1
TNS 2020xvc [ZTF20aclwowi] 22:00:12.246 -18:13:35.76 SN Ia 0.1 -5 to -2 days redshift from SNID 22:00:12.246 -18:13:35.76 SN Ia 0.1
TNS 2020yff [ATLAS20betk] 08:11:10.904 -10:35:17.20 SN Ia-91T-like 0.07 around peak light redshift from SNID 08:11:10.910 -10:35:17.31 SN Ia 0.07
TNS 2020yfu [ZTF20acitojm] 06:41:19.780 +19:16:22.61 SN Ia 0.05 around peak light redshift from SNID 06:41:19.780 +19:16:22.61 SN Ia 0.05

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