AstroNote 2021-108

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2021-04-03 19:02:23
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: P. Pessi (ESO), A. Mitra (Nazarbayev Uni; KBTU), P. Wiseman, M. Toy, C. Frohmaier, T. Müller Bravo (Southampton), T. Nagao (Turku), L. Galbany (Granada), S. Srivastav (QUB), S. Benetti (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), I. Manulis (Weizmann)
Source Group: ePESSTO+
This report includes classifications of 2 transients: a SN Ic-BL and a SLSN-II

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 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), the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S), and the Global Supernova Search Team via the IAU Transient Name Server.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 April 02, 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 (via WISeREP) and the IAU Transient Name Server.

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

AT2021elz was identified as a possible SLSN in AstroNote 2021-102

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2021elz [ZTF21aanefkx]14:00:10.848-12:18:58.92SLSN-II0.26ZTF14:00:10.848-12:18:58.92SLSN-II0.26
TNS2021hku [ASASSN-21en]20:32:01.913-53:44:58.27SN Ic-BL0.011ESO 186-IG 0590.010908ASAS-SNat max20:32:01.913-53:44:58.27SN Ic-BL0.011