DRAFT
2021-03-04 16:44:31
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Moran (Turku), S. González-Gaitán, J. Silvestre (Lisbon), H. Kuncarayakti, T. Reynolds, C. Gutiérrez (Turku), T.-W. Chen (Stockholm), L. Galbany (Barcelona), S. Srivastav (QUB), S. Benetti (INAF), I. Arcavi (TAU), J. Anderson (ESO), T. Müller Bravo (Southampton), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), I. Irani, O. Yaron (Weizmann), D. 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, J. Gillanders, O. McBrien (QUB)
Source Group: ePESSTO+
Abstract:
This report includes classifications of 7 transients.

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 (Smith et al. 2020 2020arXiv200309052S) and the Zwicky Transient Facility ZTF (Bellm et al. 2019 2019PASP..131a8002B) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3a..26S) and by the ALeRCE broker (Forster et al. 2020 https://arxiv.org/abs/2008.03303).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 March 03, 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).

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 Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2021ddc 12:20:46.175 +27:53:05.38 SN 0.0504 ATLAS blue continuum; redshift from narrow ISM lines 12:20:46.175 +27:53:05.38 SN 0.0504
TNS 2021dhy 11:03:29.158 -14:38:20.34 SN Ia 0.0664 WISEA J110329.05-143817.8 0.066436 ZTF at max 11:03:29.158 -14:38:20.34 SN Ia 0.0664
TNS 2021dib 11:34:56.673 +09:02:19.26 SN I 0.086 SDSS J113456.67+090218.4 ZTF at max redshift from SN spectrum fit 11:34:56.671 +09:02:19.19 SN I 0.086
TNS 2021dqo 08:51:39.101 +23:56:09.56 SN Ia 0.078 ZTF at max redshift from SN spectrum fit 08:51:39.097 +23:56:09.40 SN Ia 0.078
TNS 2021duv 11:45:54.651 +22:27:15.94 SN II 0.0227 2MFGC 09233 0.022686 ZTF -7 to -4 11:45:54.651 +22:27:15.94 SN II 0.0227
TNS 2021eij 14:29:33.108 +10:56:29.68 SN Ia 0.1 ZTF -4 to -7 redshift from SN spectrum fit 14:29:33.108 +10:56:29.68 SN Ia 0.1
TNS 2021ecu 16:33:11.583 +09:34:01.92 SN Ia-91T-like 0.068 ZTF -10 to -8 redshift from SN spectrum fit 16:33:11.580 +09:34:01.78 SN Ia-91T-like 0.068

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