DRAFT
2020-10-26 16:12:33
Type: Object/s-Discovery/Classification
Bibcode: 2020TNSAN.210....1G
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+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
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 http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

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

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2020uli [ATLAS20bcev] 19:32:51.790 -45:13:20.26 SN Ia 0.019 +2 to +3 weeks 19:32:51.790 -45:13:20.17 SN Ia 0.019
TNS 2020xjx [ZTF20ackjhue] 21:00:04.184 +19:35:22.57 Galaxy 21:00:04.190 +19:35:22.63
TNS 2020xoq [ATLAS20bdyf] 20:03:00.689 -41:33:02.22 SN II 0.0324 blue and featureless spectrum. Redshift derived from narrow emission line identified as Halpha 20:03:00.630 -41:33:02.23 SN II 0.032
TNS 2020xsl [ATLAS20bect] 02:10:32.619 -11:48:47.69 SN Ia 0.094 around max 02:10:32.619 -11:48:47.69 SN Ia 0.094
TNS 2020ybj [ATLAS20bene] 02:21:17.502 +13:42:58.96 SN II 0.023 -5 to -1 days 02:21:17.508 +13:42:58.95 SN II 0.023
TNS 2020ycg [ATLAS20beom] 05:34:53.246 -29:40:15.05 SN Ia 0.137 around max 05:34:53.246 -29:40:15.05 SN Ia 0.137
TNS 2020xqq [ATLAS20beop] 04:17:43.447 -26:23:06.57 SN Ia 0.1 around max 04:17:43.505 -26:23:06.41 SN Ia 0.1
TNS 2020ydj [ATLAS20bepc] 05:05:12.422 -31:32:34.03 0.044 blue and featureless spectrum. Redshift derived from a single emission line identified as He I 587.6 nm. 05:05:12.422 -31:32:34.03 SN 0.044
TNS 2020yef [ATLAS20bepv] 02:31:34.310 -14:09:05.69 SN Ia 0.053 around max 02:31:34.307 -14:09:05.80 SN Ia 0.053

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