AstroNote 2020-258

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DRAFT
2020-12-16 14:56:24
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: P. Pessi (ESO), J. Anderson (ESO), C. Gutierrez (Turku), L. Galbany (Granada), M. Dennefeld (IAP), T. Muller-Bravo (Southampton), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), 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+
Abstract:
This report includes classifications of 2 Type Ia's.

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 December 15, 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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020acqx [ATLAS20bihi]02:42:54.177-17:00:10.47SN Ia0.028LEDA 890333ATLAS-10 to -8Redshift from SNID02:42:54.190-17:00:10.75SN Ia0.02
TNS2020acef [ZTF20acwnrty]09:44:23.970+22:58:45.01SN Ia-91T-like0.065SDSS J094424.00+225843.7ZTF-3 to +3Redshift from SNID09:44:23.972+22:58:44.87SN Ia-91T-like0.065