AstroNote 2020-47

Primary tabs

2020-02-21 18:00:25
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: Authors: A. Möller, M. Amenouche (Clermont-Ferrand), M. Smith, T. Muller Bravo, M. Pursiainen (Southampton), C. Angus (DARK), H. Kuncarayakti (Turku), L. Galbany (Granada), R. Cartier (CTIO), S. Benetti (INAF), S. Prentice (TCD), O. Yaron (Weizmann), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), D. Young (QUB), I. Manulis (Weizmann)
Source Group: ePESSTO+
This report includes classifications of 2 Type Ia's, 1 Type Ia-91T-like, 2 Type IIn, 1Type Ibn and 1 Type I 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 Zwicky Transient Facility ZTF (Kulkarni 2018 2018ATel11266....1K) - 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), the ESA Gaia Photometric Science Alerts Team DPAC. and by the Gravitational-wave Optical Transient Observer GOTO (Dyer et al. 2018 2018SPIE10704E..0CD).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2020 February 20, 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
TNS2020cpt [ZTF20aanvpzo]14:57:30.248+08:23:24.03SN Ia0.03705CGCG 076-1110.03696214:57:30.247+08:23:24.02SN Ia0.03705
TNS2020csh [ZTF20aaocklb]11:05:51.093-18:37:17.11SN IIn0.07SDSS J110551.53-183715.611:05:51.091-18:37:17.15SN IIn0.07
TNS2020cud [GOTO20hb]13:27:47.660-27:16:22.14SN Ia-91T-like0.0453052MASX J13274799-27162580.050213:27:47.620-27:16:22.30SN Ia-91T-like0.045305
TNS2020cui [ZTF20aammbvq]11:22:19.659-07:34:47.18SN IIn0.02511:22:19.650-07:34:47.14SN IIn0.025
TNS2020cwd [ASASSN-20bz]06:06:59.081-49:00:23.94SN Ibn0.052PGC48143506:06:59.081-49:00:23.94SN Ibn0.052
TNS2020cwl [Gaia20awl]15:42:10.650+02:41:07.01SN Ia0.05615:42:10.650+02:41:07.01SN Ia0.056
TNS2020cwm [Gaia20awm]15:26:45.980+02:53:22.24SN I0.096SDSS J152645.95+025322.80.096Transient hidden in the galaxy. The spectrum shows faint, broad features identifiying it as a Type I SN, but exact classification could not be secured.15:26:45.980+02:53:22.24SN I0.096