AstroNote 2020-4

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2020-01-04 16:00:06
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: N. Meza (PUC), T. Müller Bravo, P. Wiseman, M. Grayling (Southampton), L. Galbany (UGR), T. Nagao (ESO), M. T. Botticella (INAF), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), 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), I. Manulis (Weizmann)
Source Group: ePESSTO+
This report includes classifications of two Type Ia SNe and one Type Ia 91-T like SN.

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 (Tonry et al. 2018 2018PASP..130f4505T), the Zwicky Transient Facility ZTF (Kulkarni 2018 2018ATel11266....1K) - 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 Jan 3, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) and astroDASH (Muthukrishna et al. 2019 2019arXiv190302557M).

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 RedshiftPhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2019ybv [ASASSN-19adz]06:50:08.924-45:57:37.77SN Ia-91T-like0.04WISEA J065009.20-455737.50Phase and redshift from the SNID and astroDASH matches06:50:08.910-45:57:37.87SN Ia-91T-like0.04
TNS2019yzi [ZTF19adbpulv]03:01:31.912+16:40:52.74SN Ia0.031388CGCG 463-0470.031388-6Redshift from host, phase from the SNID and astroDASH matches03:01:31.900+16:40:52.93SN Ia0.031388
TNS2020dp [ATLAS20arm]12:39:54.210-23:52:58.52SN Ia0.052-7Phase and redshift from the SNID and astroDASH matches12:39:54.200-23:52:58.22SN Ia0.052