AstroNote 2019-26

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2019-06-08 13:33:28
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: E. Swann, C. Frohmaier (ICG; Portsmouth), P. Short, M. Nicholl (Edinburgh), M. Dennefeld (IAP), S. Williams (Lancaster), P. Pessi (IALP), A. Pastorello (INAF), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (MPE), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), O. Yaron (Weizmann), D. R. 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, O. McBrien, S. Srivastav (QUB)
Source Group: ePESSTO+

ePESSTO+, the extended 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 (Tonry et al. 2018 2018PASP..130f4505T), the Zwicky Transient Facility ZTF (Kulkarni 2018 2018ATel11266....1K) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3a..26S), the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S), and the IAU TNS list.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2019 June 7, 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 RedshiftSourceReported TypeReported RedshiftPhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2019hbt13:43:10.290+30:20:36.40SN II0.034II0.034Spectrum is dominated by a blue continuum, with weak Balmer and He II emission lines consistent with flash ionisation in a young SN II. GELATO also finds some matches to young SNe IIn.13:43:10.295+30:20:36.40SN II0.03474
TNS2019gxa [ASASSN-19oi]23:53:51.768-40:01:18.80SN Ia0.04Ia0.04823:53:51.821-40:01:19.96SN Ia0.04
TNS2019has02:46:55.181-24:48:24.01SN Ia0.022Ia0.022-702:46:55.170-24:48:23.98SN Ia0.025
TNS2019giq [ATLAS19lzg]23:31:41.807-13:15:03.67SN Ia0.03Ia0.03-623:31:41.818-13:15:03.53SN Ia0.03
TNS2019gvo [ASASSN-19oe]00:54:30.814-49:08:54.02SN Ia0.05Ia0.05000:54:30.814-49:08:54.02SN Ia0.05
TNS2019gwx [ZTF19aaxibpz]23:10:01.021+09:37:12.31SN Ia0.071Ia0.071-523:10:01.021+09:37:12.31SN Ia0.065
TNS2019gql [ASASSN-19nx]00:51:40.939-13:19:03.79SN II0.021II0.02100:51:40.874-13:19:05.80SN II0.021