DRAFT
2022-08-27 18:35:58
Type: Object/s-Discovery/Classification
Bibcode: 2022TNSAN.184....1G
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Gutierrez, T. Kravtsov (UTU), T. Killestein (Warwick), T. Moore (QUB), L. Galbany (ICE), N. Ihanec (Warsaw), J. Sollerman (Stockholm), D. B. Malesani (Radboud Univ. and DAWN/NBI), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), R. Bruch, O. Yaron (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith, S. J. Smartt, M. Fulton, J. Gillanders, T. Moore, S. Srivastav (QUB)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of two Type IIn, one Type Ib, one Type Ic, one SLSN II and blue continuum. AT2022rzb and AT2021ydc were also observed; they were found to be consistent with a pure galaxy spectrum and an AGN, respectively.

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), 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 2022 August 26, 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 2022ryd [ATLAS22bayv] 19:58:37.487 +02:35:59.28 SN Ib 0.01 ATLAS at max Redshift from spectral match. The redshift is lower than the overlaid galaxy. 19:58:37.530 +02:35:59.75 SN Ib 0.01
TNS 2022rwy [ATLAS22bavy] 20:49:48.781 -04:45:06.97 SN Ic 0.0747 ATLAS +16 Known host from NED. 20:49:48.814 -04:45:07.56 SN Ic 0.0747
TNS 2022qml [ATLAS22yti] 22:29:45.513 +13:38:24.07 SN IIn 0.046 ATLAS at max Redshift from narrow emission lines. 22:29:45.502 +13:38:24.11 SN IIn 0.046
TNS 2022opm [ZTF22aasousd] 22:11:17.169 +29:18:01.87 SLSN-II 0.249 ZTF Redshift from narrow emission lines. Transient has previosly been discussed in Astronote 2022-163, Aug 12 2022 22:11:17.169 +29:18:01.87 SLSN-II 0.249
TNS 2022pss [ATLAS22wxv] 01:28:19.227 +20:23:45.37 SN IIn 0.06 SDSS J012819.15+202345.7 ATLAS +11 to +20 01:28:19.226 +20:23:45.32 SN IIn 0.06
TNS 2022rzb [ATLAS22bbmy] 00:19:20.321 -01:55:02.24 Galaxy 0.0559 ATLAS Redshift from the galaxy HII region emission lines. The spectrum is consisten with a pure galaxy spectrum. 00:19:20.321 -01:55:02.24 Galaxy 0.0559
TNS 2021ydc [ATLAS22bbkm] 01:25:17.636 +22:23:25.31 AGN 0.059 WISEA J012517.64+222324.8 ATLAS Object has shown variability over a period of time, current spectrum is a blue continuum with several broadened Balmer lines. 01:25:17.636 +22:23:25.31 SN IIn 0.055
TNS 2022rkp [ATLAS22baaf] 04:37:24.978 -21:17:37.86 SN 0.066 ATLAS Known host redshift from NED. Current absolute magnitude is -18.8. 04:37:24.965 -21:17:38.14 SN 0.066

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