AstroNote 2021-72

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DRAFT
2021-02-22 16:00:36
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: L. Harvey, S. Prentice, M. Deckers, M. Magee (TCD), S. Schulze (Stockholm), J. Teffs (LJMU), S. Gonzalez-Gaitan (CENTRA), M. Dennefeld (IAP), S. Benetti (INAF), J. Anderson (ESO), T. Müller Bravo (Southampton), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), E. Zimmerman, O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann)
Source Group: ePESSTO+
Abstract:
This report includes the classification of one Type Ia SN at pre-maximum.

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 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 https://arxiv.org/abs/2008.03303).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 Feb 21, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), and a custom classification software.

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
TNS2021djz [ZTF21aalnxkl]13:31:55.492-02:27:05.46SN Ia0.087WISEA J133155.45-022704.60.0874pre-maxRedshift from host13:31:55.492-02:27:05.46SN Ia0.087