AstroNote 2021-72

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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+
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

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 (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