AstroNote 2020-212

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2020-10-29 16:41:01
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: N. Ihanec, M. Gromadzki (Warsaw), T. Wevers (ESO), N. Elias-Rosa (INAF-OAPd/CSIC-ICE), P. Wise (Southampton), T.-W. Chen, T. Schweyer (Stockholm), S. Benetti (INAF-OAPd), 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 4 Type Ia's, 1 Type II and one blue featureless transient.

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 28, 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 RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020uew [ATLAS20bbum]03:19:23.878-29:59:05.61noisy spectrum that appears blue and featureless03:19:23.870-29:59:05.68Other
TNS2020uve [ZTF20acgnelh]02:12:30.112-22:28:22.16SN II0.04+1 to +2 weeksredshift from SNID02:12:30.112-22:28:22.16SN II0.04
TNS2020xsx [ATLAS20bedh]07:59:32.246-16:19:44.23SN Ia0.1+7 to +10 daysredshift from SNID07:59:32.246-16:19:44.23SN Ia0.1
TNS2020xvc [ZTF20aclwowi]22:00:12.246-18:13:35.76SN Ia0.1-5 to -2 daysredshift from SNID22:00:12.246-18:13:35.76SN Ia0.1
TNS2020yff [ATLAS20betk]08:11:10.904-10:35:17.20SN Ia-91T-like0.07around peak lightredshift from SNID08:11:10.904-10:35:17.20SN Ia0.07
TNS2020yfu [ZTF20acitojm]06:41:19.780+19:16:22.61SN Ia0.05around peak lightredshift from SNID06:41:19.780+19:16:22.61SN Ia0.05