AstroNote 2020-207

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2020-10-25 16:01:32
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: N. Ihanec, M. Gromadzki (Warsaw), T. Wevers (ESO), C. Gutierrez (Turku), S. Taubenberger (MPA Garching), T.-W. Chen (Stockholm), S. Schulze, I. Manulis (Weizmann), J. Anderson (ESO), T. Muller Bravo (Southampton), 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), K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA, Univ. Hawaii)
Source Group: ePESSTO+
This report includes classifications of 3 Type Ia's, of which 1 is a 91-T-like, 1 Type II and a galaxy. We also confirm the previously reported classifications of PS20khn as a SN II and AT2020wcj as a SNIa.

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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), and 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2020 October 24, 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
TNS2020xoc [PS20kco]01:32:10.421-15:13:43.85SN Ia0.13around peak lightredshift from SNID01:32:10.420-15:13:43.89SN Ia0.13
TNS2020xgh [PS20jxw]23:28:31.766-05:28:16.57SN Ia0.14around peak lightredshift from SNID23:28:31.766-05:28:16.57SN Ia0.14
TNS2020wnx [ZTF20acjfkbb]05:19:03.180-17:49:35.56SN II0.066LEDA 876835redshift from emission line at 6994 A identified as Halpha05:19:03.180-17:49:35.56SN II0.066
TNS2020wze [ZTF20acjdhof]02:32:09.880-06:48:57.70SN Ia-91T-like0.152SDSS J023209.91-064857.30.087-5 to -1 days02:32:09.880-06:48:57.70SN Ia-91T-like0.152
TNS2020wia [ZTF20acitxdz]05:48:53.961+19:11:31.35Galaxy0.022MASS J05485394+1911311red continuum, only host features visible in spectrum05:48:53.961+19:11:31.35Galaxy0.02