AstroNote 2020-250

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2020-12-11 10:32:46
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: P. Pessi (ESO), J. Anderson (ESO), L. Galbany (Granada), C. Gutierrez (Turku), T. Schweyer (Stockholm), S. Benetti (INAF), T. Muller Bravo (Southampton), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron, I. Irani (Weizmann), D. Young (QUB), I. Manulis (Weizmann), 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+
This report includes classifications of 2 Type Ia's, 1Type Ic broad line, and SN2020abyj, which is a CC SNe with narrow Balmer lines and HeII.

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 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 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 2020 December 10, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).

The classification spectra and additional details can be obtained from (via WISeREP) and the IAU Transient Name Server.

The classified objects are listed in the Related Objects table below.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020abfa [ZTF20actskcf]03:07:20.617+04:23:25.90SN Ia0.031ZTFmax03:07:20.610+04:23:25.84SN Ia0.031
TNS2020abww [ASASSN-20pi]03:14:25.063-62:27:02.59SN Ia0.059PGC127532ASASSNmax03:14:25.063-62:27:02.59SN Ia0.059
TNS2020abxl [ATLAS20bgzy]05:04:22.760-14:02:46.39SN Ic-BL0.0815ATLASmaxRedshift from host emission05:04:22.764-14:02:46.38SN Ic-BL0.0815
TNS2020abyj [ATLAS20bhaz]01:33:53.083-25:12:23.22SN0.031769ATLASyoungRedshift from host emission01:33:53.083-25:12:23.22SN0.0318