AstroNote 2019-82

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DRAFT
2019-08-29 13:22:08
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Brennan, E. Callis (Univ. College Dublin), N. Ihanec, M. Gromadzki (Warsaw), M. T. Botticella (INAF-Capodimonte), H. Kuncarayakti (Turku) , J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (MPE), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Edinburgh), O. Yaron, l. Manulis (Weizmann), D. Young (QUB), O. Yaron, l. 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), P. Mroz (Warsaw), S. Benetti (INAF-Padova)
Source Group: ePESSTO+
Abstract:
This report includes classifications of three Type Ia's, two Type II's, one CV and AT2019oop which shows blue and featureless continuum which suggest core-collapse SN. AT2019oqq, AT2019onu and AT2019ovn were not visible on acquisition image.

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 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 and http://www.astronomy.ohio-state.edu/~assassin/index.shtml).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2019 August 28, 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) and Superfit (Howell et al. 2005 2005ApJ...634.1190H).

The classification spectra and additional details can be obtained from 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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2019otb [ZTF18abmxaxt]17:54:59.724+11:54:09.24CV0ZTF17:54:59.724+11:54:09.24CV
TNS2019ojd [ATLAS19swu]21:22:33.613-23:43:03.61SN IIP0.045ATLAS+121:22:33.613-23:43:03.61SN II0.045
TNS2019omk [ASASSN-19ui]23:21:31.142-61:36:58.82SN Ia0.041GALEXASC J232130.77-613657.8ASAS-SN-323:21:30.890-61:36:57.31SN Ia0.041
TNS2019oop [ZTF19abrtjsf]23:37:49.842-24:24:18.27SN0.052MASX J23375044-24242230.053741ZTFblue and featureless continuum suggests core-collapse SN23:37:49.842-24:24:18.27SN0.05
TNS2019oto [ATLAS19tii]21:44:45.102-27:07:21.41SN Ia0.117ATLAS-221:44:45.102-27:07:21.41SN Ia0.117
TNS2019oje [ATLAS19swz]19:58:28.442-37:32:19.55SN IIb0.045ATLAS+4/+1219:58:28.442-37:32:19.55SN IIb0.045
TNS2019nwl [ZTF19aboudfp]00:33:33.225+21:47:08.32SN Ia0.083ZTF+900:33:33.232+21:47:08.34SN Ia0.083
TNS2019oqq [ATLAS19tbv]21:05:35.820+14:58:45.90ATLASnot visible on 60s acquisition image21:05:35.820+14:58:45.90
TNS2019onu [ZTF19abrticg]23:24:56.420-18:17:51.98ZTFnot visible on 60s acquisition image23:24:56.420-18:17:51.98
TNS2019ovn [ZTF19abtzksc]23:11:30.549-10:09:13.08SDSS J231130.61-100919.90.099ZTFnot visible on 70s acquisition image23:11:30.549-10:09:13.08