AstroNote 2019-125

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2019-11-06 18:27:41
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: P. Charalampopoulos, D. B. Malesani (DTU Space), L. Izzo (DARK/NBI), G. Leloudas (DTU Space), C. R. Angus (DARK/NBI), M. Dennefeld (IAP), P. Pessi (IALP), R. Cartier (CTIO), S. Prentice (TCD), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (MPE), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), 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), K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA, Univ. Hawaii)
Source Group: ePESSTO+
This report includes classifications of 2 Type Ia's. We reclassify SN2019ssi as a SN-IIP (previously reported as a SN-IIn from AstroNote 2019-108 / TNS Classification Report No. 5315).

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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), 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 by the ESA Gaia Photometric Science Alerts Team DPAC.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2019 November 06, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using astroDASH (Muthukrishna et al. 2019 2019arXiv190302557M).

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
TNS2019tyr [ATLAS19zsz]11:22:51.520-07:35:25.08SN Ia0.0162ATLAS, GAIApre-max11:22:51.520-07:35:25.08SN Ia0.022
TNS2019ufq [ASASSN-19aat]23:07:55.027-57:41:26.56SN Ia0.0442MASS J23075596-5741326ASASSNpre-max23:07:55.027-57:41:26.56SN Ia0.044
TNS2019ssi [ZTF19acftfav]23:30:56.135+15:29:29.91SN IIP0.01339UGC 126400.013373ATLAS, ZTF, PS1+11Reclassified from SN-IIn in TNS Classification Report No. 5315. Spectra consistent with SN-II and light curve evolution suggests this event is a SN IIP23:30:56.130+15:29:29.98SN IIP0.013