AstroNote 2020-44

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2020-02-20 17:03:28
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Amenouche, A. Möller (Clermont-Ferrand), M. Smith, M. Pursiainen, T. Muller Bravo (Southampton), C. Angus (DARK), L. Galbany (Granada), R. Cartier (CTIO), H. Kuncarayakti (Turku), C. Gutiérrez (Southampton), S. Benetti (INAF), S. Prentice (TCD), 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 two Type Ia's, one Type Ib, one Type Ib-pec and one CV. Additionally, AT2020cwh was not seen in acquisition image.

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 (Kulkarni 2018 2018ATel11266....1K) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3a..26S) and by the ESA Gaia Photometric Science Alerts Team DPAC.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2020 February 19, 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.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020cln [ZTF20aamrryv]08:19:31.877-03:53:00.49SN Ib0.0416dFJ0819318-0352580.041Redshift from the host galaxy08:19:31.877-03:53:00.49SN Ib0.041
TNS2020cwh11:20:20.000+12:59:25.00Target not seen in acq. image11:20:20.000+12:59:25.00
TNS2020buq [ZTF20aalyeut]11:42:42.713+07:51:05.13SN Ia0.086411:42:42.713+07:51:05.13SN Ia0.0864
TNS2020cpg [Gaia20auy]13:52:17.980+13:34:31.73SN Ib-pec0.037CGCG 073-0910.037Redshift from the assumed host galaxy13:52:17.980+13:34:31.73SN Ib0.037
TNS2020crz [ZTF20aaodnmm]14:53:56.437+04:46:19.39SN Ia0.13Redshift from SNID fit14:53:56.439+04:46:19.44SN Ia0.13
TNS2020cxg13:12:34.530-33:06:07.80CV0Spectrum shows blue continuum with narrow balmer absoption lines at z=013:12:34.530-33:06:07.80CV