AstroNote 2019-58

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2019-07-31 16:04:07
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Frohmaier, E. Swann (ICG; Portsmouth), P. Wiseman, C. Angus (Univ. Southampton), P. Pessi (IALP), I. Mandel (Monash/Birmingham), L. Galbany (U. Pittsburgh), S. Taubenberger (MPA-Garching), I. Manulis (Weizmann), S. Benetti (INAF), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (MPE), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Edinburgh), O. Yaron (Weizmann), D. Young (QUB)
Source Group: ePESSTO+
This report includes classifications of 4 Type Ia supernovae, I Type Ibn, 1 Type Ib, 1 M-Dwarf, and 1 object with a hot blue continuum. AT2019lwu is a nuclear transient with a hot blue continuum.

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), and 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 July 30, 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 RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2019lsm [ASASSN-19sf]14:35:02.565+14:46:36.81SN Ibn0.041SDSS J143502.16+144639.50.04168ASASSN14:35:02.553+14:46:36.85SN Ibn0.04168
TNS2019luy [ZTF19abiqnpv]00:24:21.353+10:06:08.84SN Ib0.045ZTF+5Good match to SN 2000H00:24:21.358+10:06:08.83SN Ib0.045
TNS2019lwu [ZTF19abidbya]23:11:12.315-01:00:10.80OtherZTFBlue continuum23:11:12.305-01:00:10.71TDE0.117
TNS2019lxe [ATLAS19qlo]20:47:57.615-29:31:31.82SN Ia0.03ATLAS+120:47:57.615-29:31:31.82SN Ia0.03
TNS2019lxp [ATLAS19qmh]00:17:10.813-37:28:02.71SN Ia0.091ATLAS-500:17:10.813-37:28:02.71SN Ia0.091
TNS2019lxq [ATLAS19qmi]22:36:17.294-32:22:16.18M dwarf22:36:17.294-32:22:16.18M dwarf
TNS2019lzk [ATLAS19qmv]21:24:35.688-40:17:24.42SN Ia0.091ATLAS-621:24:35.688-40:17:24.42SN Ia0.091
TNS2019lzn [ATLAS19qnm]00:23:28.247-37:52:00.15SN Ia0.055ATLAS+300:23:28.247-37:52:00.15SN Ia0.055