AstroNote 2019-62

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2019-08-06 16:12:08
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Angus, P. Wiseman (Univ. Southampton), E. Swann, C. Frohmaier (ICG; Portsmouth), Cristina Barbarino (OKC), Regis Cartier (CTIO), T.-W. Chen (MPE), I. Manulis (Weizmann), J. Anderson (ESO), T. Muller Bravo (Southampton), 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 3 Type Ia supernovae, 1 Type Ic broad-line supernovae, 2 objects dominated by host galaxy flux, and 1 Type IIn-peculiar. SN2019mrw is a young Type Ia approximately 13 days before peak. SN2019mry shows similarity to SN1996al (Benetti et al. 2016, MNRAS, 456, 3296) and SN2013gc (Reguitti et al. 2019, MNRAS, 482, 2750) and traces of pre-supernova activity.

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), "OGLE-IV Real-time Transient Search (Wyrzykowski et al., 2014 arxiv:1409.1095", and by the ALeRCE broker using the public ZTF data stream.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2019 August 5, 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
TNS2019mrw [ZTF19abmolyr]23:41:16.809+25:33:00.10SN Ia0.034MCG+04-55-045ZTF-1323:41:16.820+25:33:00.07SN Ia0.031375
TNS2019moo [ZTF19abndojo]23:00:08.644+06:50:10.60Galaxy0.077ZTF23:00:08.631+06:50:10.73Galaxy0.077
TNS2019mqo [ZTF19abkdeae]00:07:16.256+19:15:36.62SN Ia0.099ZTF+900:07:16.256+19:15:36.62SN Ia0.099
TNS2019mga [ZTF19ablovot]01:06:07.770-06:08:45.06SN Ia0.044ZTF-401:06:07.770-06:08:45.06SN Ia0.04
TNS2019mry00:11:38.080-68:34:18.10SN IIn-pec0.03OGLE-GAL-SMC785.07-1123.982-3835.589OGLE00:11:38.080-68:34:18.10SN IIn-pec0.03
TNS2019mof [ATLAS19rhi]00:06:05.055-28:00:51.27SN Ic-BL0.027ATLAS-200:06:05.055-28:00:51.27SN Ic-BL0.027
TNS2019mop [ZTF19abneygz]22:45:04.084+04:04:03.99Galaxy0.039ZTF22:45:04.084+04:04:03.99Galaxy0.039