AstroNote 2020-36

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2020-02-05 16:21:50
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: R. Bruch, I. Irani, E. Zimmerman, O. Yaron (Weizmann), A. Pastorello (INAF), S. Benetti (OAPd-INAF), S. C. Williams (Turku), S. Taubenberger (MPA Garching), N. Ihanec (Warsaw), 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 one Type Ibn SN and one 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2020 Feb 4, 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
TNS2020big [ATLAS20eqs]05:01:15.822-14:01:28.08SN Ibn0.0245WISEA J050115.92-140124.30.024467ATLASRedshift from NED and spectrum narrow lines05:01:15.822-14:01:28.08SN Ibn0.0245
TNS2020bfw [ATLAS20ejr]12:45:59.020-33:50:00.55Impostor-SN0.002ATLASLBV/SN-impostor (at abs. mag of around -10 from the ATLAS photometry at that redshift). Clear identification of He I lines, so not attributed to the host galaxy.12:45:59.020-33:50:00.55Impostor-SN0.002