AstroNote 2020-21

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2020-01-23 17:32:39
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: R. Bruch, O. Yaron, I. Irani, E. Zimmerman, S. Schulze (Weizmann), L. Galbany (UGR), C. Gutierrez (Southampton), A. De Cia (Geneva), A. Pastorello (INAF), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), D. R. 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)
Source Group: ePESSTO+
This report includes classifications of 2 Type Ia's and a nearby z=0.004 LBV/SN-impostor.

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) and 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2020 Jan 22, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).

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
TNS2020aai [ZTF20aagfjlj]10:11:57.908-01:57:06.18SN Ia0.0456ZTF+2Redshift from NED10:11:57.903-01:57:06.10SN Ia0.045
TNS2020alh [ATLAS20caf]14:03:38.763-33:58:37.39SN Ia0.016ATLAS+0Redshift from SNID14:03:38.763-33:58:37.39SN Ia0.016
TNS2020agp [ATLAS20avo]03:42:43.100-43:18:16.84LBV0.004ESO 249- G 0150.003529ATLASLBV/SN-impostor03:42:43.100-43:18:16.84LBV0.004