AstroNote 2021-60

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2021-02-11 17:11:39
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Deckers, S. Prentice, J. Terwel, M. Magee (TCD), C. Barbarino (Stockholm), G. Pignata (UANB), T. Müller Bravo (Southampton), S. Benetti (INAF), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron, N. L. Strotjohann (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith, S. J. Smartt, J. Gillanders, O. McBrien, S. Srivastav (QUB)
Source Group: ePESSTO+
This report includes classifications of 3 Type Ia SNe, 2 Type II SNe, and 1 Type Ic 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 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) and by the ALeRCE broker (Forster et al. 2020

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 Feb. 10, 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
TNS2021cgu [ZTF21aaipypa]11:03:03.718+05:05:53.48SN II0.026CGCG 038-0990.025478youngz from host. Possibly shows signs of a narrow H-alpha P-Cygni profile11:03:03.717+05:05:53.45SN II0.026
TNS2021cac [ATLAS21dpr]09:55:05.475-15:00:33.46SN Ia0.067maxz from snid09:55:05.475-15:00:33.46SN Ia0.067
TNS2021bzw [ATLAS21dpa]10:54:38.722-14:35:42.25SN Ia0.066maxz from snid10:54:38.727-14:35:42.27SN Ia-91T-like0.066
TNS2021bwq [ZTF21aahdqrg]11:28:17.077-12:53:17.73SN Ic0.022IC 28560.022015z from host11:28:17.072-12:53:17.59SN Ic0.022015
TNS2021cdv [ZTF21aaiaeri]11:07:52.217+11:00:36.05SN II0.043CGCG 067-0040.042676youngz from host11:07:52.217+11:00:36.05SN II0.043
TNS2021cna [ATLAS21ekn]14:40:01.814+20:08:09.25SN Ia-91T-like0.097WISEA J144001.80+200808.90.097291maxz from host14:40:01.814+20:08:09.25SN Ia-91T-like0.097