DRAFT
2019-06-09 16:50:28
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Frohmaier, E. Swann (ICG; Portsmouth), P. Short, M. Nicholl (Edinburgh), M. Dennefeld (IAP), S. C. 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 advanced Public ESO Spectroscopic Survey for Transient Objects (see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org<http://www.pessto.org/> ), reports the following supernova classifications.   Targets were supplied by the ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts), by the Zwicky Transient Facility (https://www.ztf.caltech.edu/; Kulkarni et al. 2018, ATel 11266) data stream processed through the Lasair broker (http://lasair.roe.ac.uk/), by the ATLAS survey, see Tonry et al. (2018, PASP, 130,  064505), and the IAU TNS list (see https://www.wis-tns.org/).    All observations were performed on the ESO New Technology Telescope at La Silla on 2019 June 8, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024), GELATO (Harutyunyan et al., 2008,  A&A, 488, 383) and DASH (Muthukrishna et al. 2019, arXiv:1903.02557).   Classification spectra and additional details can be obtained from http://www.pessto.org<http://www.pessto.org/> (via WISeREP) and the IAU Transient Name Server.

The classified objects are listed in the Related Objects table below.

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Reported Type Reported Redshift Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2019hcc [Gaia19cdu] 21:00:20.930 -21:20:36.06 SLSN-I 0.044 Gaia SLSN I 0.044 PreMax Spectrum shows blue continuum with host emission lines at z=0.0435. At this redshift, a w-shaped absorption feature in the blue matches the O II lines in young SLSNe. The absolute magnitude at discovery is -17.7, faint for that class unless it is a very early detection. 21:00:20.930 -21:20:36.06 SLSN-I 0.044
TNS 2019fyt [ZTF19aavndxo] 20:47:51.018 +10:17:35.35 AGN 0.102 ZTF AGN? 0.102 Blue continuum, narrow H and [O III] emission at z=0.102. Coincident with a faint SDSS galaxy. 20:47:51.028 +10:17:35.58 AGN 0.102
TNS 2019gis [ATLAS19lzi] 16:09:42.876 -04:23:18.01 SN Ia 0.027 ATLAS Ia 0.027 At max 16:09:42.930 -04:23:18.10 SN Ia 0.04
TNS 2019gsg [ATLAS19mbn] 21:45:50.733 +15:06:33.10 SN Ia 0.112 ATLAS Ia 0.112 +8 to +10 21:45:50.761 +15:06:32.75 SN Ia 0.112
TNS 2019gqm [Gaia19bzw] 19:48:09.560 -24:26:36.60 SN IIP 0.02 Gaia IIP 0.02 At max 19:48:09.560 -24:26:36.60 SN II 0.02
TNS 2019gth [ZTF19aavyafo] 15:52:31.264 -15:19:47.21 SN Ia 0.01 ZTF Ia 0.01 At max 15:52:31.256 -15:19:47.14 SN Ia 0.1
TNS 2019hbb [ZTF19aaycomi] 23:25:13.041 +09:27:11.41 SN Ia 0.03 ZTF Ia 0.03 At max 23:25:13.050 +09:27:11.27 SN Ia 0.03
TNS 2019hat [ATLAS19mfw] 13:23:05.925 -42:20:31.48 Other 0 ATLAS Unclear Noisy spectrum showing some blue continuum, no clear classification. 13:23:05.930 -42:20:31.42
TNS 2019gyy [ATLAS19mee] 17:16:39.994 +11:28:45.78 Varstar 0 ATLAS Stellar 0.0 Blue continuum with Balmer absorption at z=0, likely CV. 17:16:39.994 +11:28:45.78 CV
TNS 2019gyx [ATLAS19mec] 23:56:30.563 -03:06:08.48 SN Ib 0.02 ATLAS Ib 0.02 +4 to +7 23:56:30.595 -03:06:08.51 SN Ib 0.02
TNS 2019gwa [ZTF19aaxffum] 15:58:41.191 +11:14:25.02 SN Ia-91T-like 0.054 ZTF Ia-91T 0.054 -7 15:58:41.190 +11:14:25.04 SN Ia-91T-like 0.054988
TNS 2019gvp [ATLAS19mco] 16:46:35.521 -31:35:31.28 SN Ib 0.015 ATLAS Ib 0.015 +7 Also classified by Do et al. (TNS Report No. 4237). 16:46:35.521 -31:35:31.28 SN Ib 0.015
TNS 2019gvn [ BraTS-SON-T2-006] 19:49:06.810 +10:06:58.70 Varstar 0 BraTS Stellar 0.0 Blue continuum with Balmer absorption at z=0, likely CV. Also classified by Ochner and Pastorello (ATEL #12854). 19:49:06.770 +10:06:58.35 CV
TNS 2019gsp [ATLAS19mce] 22:10:04.254 +23:28:38.27 Other 0 ATLAS Unclear Blue continuum, no clear features to determine a redshift 22:10:04.244 +23:28:38.50 SLSN-II 0.171

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