AstroNote 2020-210

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2020-10-26 16:12:33
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Gromadzki, N. Ihanec (Warsaw), T. Wevers (ESO), C. Gutierrez (Turku), S. Taubenberger (MPA Garching), T.-W. Chen (Stockholm), S. Benetti (INAF-OAPd) S. Schulze (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)
Source Group: ePESSTO+
This report includes classifications of 5 Type Ia's, 2 Type II's, one galaxy and one blue, featureless transients.

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 (Smith et al. 2020 2020arXiv200309052S) 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 25, 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
TNS2020uli [ATLAS20bcev]19:32:51.790-45:13:20.26SN Ia0.019+2 to +3 weeks19:32:51.790-45:13:20.17SN Ia0.019
TNS2020xjx [ZTF20ackjhue]21:00:04.184+19:35:22.57Galaxy21:00:04.190+19:35:22.63
TNS2020xoq [ATLAS20bdyf]20:03:00.689-41:33:02.22SN II0.0324blue and featureless spectrum. Redshift derived from narrow emission line identified as Halpha20:03:00.630-41:33:02.23SN II0.032
TNS2020xsl [ATLAS20bect]02:10:32.619-11:48:47.69SN Ia0.094around max02:10:32.619-11:48:47.69SN Ia0.094
TNS2020ybj [ATLAS20bene]02:21:17.502+13:42:58.96SN II0.023-5 to -1 days02:21:17.508+13:42:58.95SN II0.023
TNS2020ycg [ATLAS20beom]05:34:53.246-29:40:15.05SN Ia0.137around max05:34:53.246-29:40:15.05SN Ia0.137
TNS2020xqq [ATLAS20beop]04:17:43.447-26:23:06.57SN Ia0.1around max04:17:43.505-26:23:06.41SN Ia0.1
TNS2020ydj [ATLAS20bepc]05:05:12.422-31:32:34.030.044blue and featureless spectrum. Redshift derived from a single emission line identified as He I 587.6 nm.05:05:12.422-31:32:34.03SN0.044
TNS2020yef [ATLAS20bepv]02:31:34.310-14:09:05.69SN Ia0.053around max02:31:34.307-14:09:05.80SN Ia0.053