DRAFT
2022-09-21 16:00:23
Type: Object/s-Discovery/Classification
Bibcode: 2022TNSAN.193....1T
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Toy, M. Grayling, C. Frohmaier, P. Wiseman (Southampton), L. Galbany (ICE), F. Onori (INAF-OAAb), T. Kravtsov (UTU), S. Benetti (INAF OAPD), (J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), O. Yaron, E. Zimmerman (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), K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, H. Gao (IfA, Univ. Hawaii)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 3 Type Ia's, 1 Type IIn, 1 Galactic transient, and 1 SN with no type identified. The spectrum of AT2022skj is low S/N with marginally significant broad features.

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 Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu), the ATLAS survey (Smith et al. 2020 2020arXiv200309052S), and by 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 September 20, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), Superfit (Howell et al. 2005 2005ApJ...634.1190H) and NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H).

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 2022uax [ATLAS22beju] 20:02:39.314 -37:58:12.68 SN Ia 0.03 Redshift from SNID fit 20:02:39.314 -37:58:12.68 SN Ia 0.03
TNS 2022skj [PS22hij] 21:55:34.781 -26:31:57.32 SN 0.057 Redshift from galaxy lines. 21:55:34.781 -26:31:57.32 SN 0.057
TNS 2022tia [ATLAS22bdnv] 00:50:34.440 -48:10:32.34 SN Ia 0.07 Redshift from SNID fit 00:50:34.440 -48:10:32.34 SN Ia 0.07
TNS 2022uph [ZTF22abfvvpv] 21:50:09.114 -19:39:33.62 SN Ia 0.059 Redshift from known host. Shows strong H-alpha which may be from the host or the transient 21:50:09.114 -19:39:33.62 SN Ia 0.059
TNS 2022ufh [ATLAS22beux] 06:29:08.405 -71:29:38.89 Nova 0 Narrow P-cygni Balmer lines at z=0 06:29:08.430 -71:29:38.98 Nova
TNS 2022qyq [PS22gwn] 02:24:32.728 -06:38:42.37 SN IIn 0.166 Redshift from host NaD absorption in spectrum. 02:24:32.728 -06:38:42.37 SN IIn 0.166

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