DRAFT
2020-01-16 17:47:16
Type: Object/s-Discovery/Classification
Bibcode: 2020TNSAN..13....1S
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Schulze, I. Irani, E. Zimmerman, R. Bruch, O. Yaron (Weizmann), N. Elias-Rosa (INAF-OAPd), G. Pignata (UNAB/MAS), M. Fraser (UCD), K. Maguire (TCD), 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+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of a Type Ia, a possible Ia-91bg-like at z=0.09, a likely nearby (z=0.009) young Type II and a host-dominated spectrum at z=0.169.

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 15, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), Superfit (Howell et al. 2005 2005ApJ...634.1190H) and astroDASH (Muthukrishna et al. 2019 2019arXiv190302557M).

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
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2020yo [ZTF20aafqpum] 03:06:06.499 +13:54:48.43 SN Ia-91bg-like 0.09 Redshift from SNID/astroDASH 03:06:06.513 +13:54:48.57 SN Ia-91bg-like 0.09
TNS 2020xr [ZTF20aafgbrf] 06:28:22.171 +21:38:47.75 SN Ia 0.03 WISEA J062821.96+213847.8 Redshift from SNID/astroDASH 06:28:22.180 +21:38:48.01 SN Ia 0.03
TNS 2020vg [ZTF20aafclxb] 11:48:54.440 -04:40:53.93 SN II 0.0087 IC 0738 0.008683 Blue featureless continuum. Redshift from NED 11:48:54.430 -04:40:53.76 SN II 0.0087
TNS 2020mw [ZTF20aabhraq] 08:10:47.238 +11:31:15.80 Other 0.169 Not clear if there is transient signal above the host light, but there is possibly a blue continuum on top of the galaxy. Halpha is on top of a telluric (so not a p-cyg), and possible wide Si II absorption to the left. Redshift from host lines. 08:10:47.276 +11:31:16.07 0.169

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