AstroNote 2019-141

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2019-11-29 15:17:38
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: E. Callis (UCD), T. Wevers (Cambridge), N. Ihanec, M. Gromadzki (Warsaw), S. C. Williams (Turku), G. Pignata (UNAB/MAS), R. Carini (INAF), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (Stockholm), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron (Weizmann), D. Young (QUB), I. Manulis, A. Gal-Yam (Weizmann), G. Leloudas (DTU Space), S. Benetti, A. Pastorello (INAF-Padova), S. Taubenberger (MPA Garching), M. Della Valle (INAF-Napoli), 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 SN 2019vrq as a young supernova Type Ia-91T-like, four days after last non-detection, and SN 2019vjl as a Type II. We encourage followup observations.

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 All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S). 

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2019 November 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) and Superfit (Howell et al. 2005 2005ApJ...634.1190H).

Phase of SN 2019vrq was estimated base on light curve provided by the ATLAS survey (Tonry et al. 2018 2018PASP..130f4505T).

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
TNS2019vrq [ASASSN-19aca]03:04:21.269-16:01:26.40SN Ia-91T-likeGALEXASC J030421.67-160124.70.013079-15 - -10last deep o > 20.5 (AB) ATLAS non-detection four days ago03:04:21.451-16:01:26.40SN Ia-91T-like0.013
TNS2019vjl [ASASSN-19abo]09:49:23.686+01:08:47.09SN IINGC 30150.02501709:49:23.702+01:08:46.70SN II0.025017