DRAFT
2024-10-03 18:48:58
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.281....1D
ePESSTO+ spectroscopic classification of optical transients
Authors: G. Dimitriadis, A. Milligan, M. Ghendrih (Lancaster), J. Duarte, S. Gonzalez-Gaitan, R. Santos (Lisbon), T. Killestein (Turku), A. Sankar K (NCU), E. Concepcion (Nova Gorica), S. Benetti (INAF), C. Gutierrez (ICE-CSIC), P. Wiseman (Southampton), J. Sollerman (Stockholm), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), O. Yaron (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, S. Srivastav, D. R. Young, M. Fulton, M. McCollum, T. Moore, M. Nicholl, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), C. Stubbs (Harvard)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 1 Type Ia, 1 Type Ib, 1 Type Ic and 2 unclassified events. We encourage follow-up observations.

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 2020PASP..132h5002S) 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...3...26S) and by the ALeRCE broker (Forster et al. 2020 2021AJ....161..242F).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 October 2, using EFOSC2, Grism11 (3380-7520, 13.8A resolution) 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) 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 Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2024wri [ATLAS24onl] 19:12:42.951 -03:56:14.70 SN Ia 0.019 2MASXJ19124311-0356087 0.01928 -7 to -4 Redshift from NED 19:12:42.930 -03:56:14.82 SN Ia 0.019
TNS 2024wwd [ATLAS24oqu] 02:15:37.523 -13:42:56.02 SN Ib 0.017 2MASX J02153703-1343108 0.016738 near max Redshift from NED 02:15:37.523 -13:42:56.02 SN Ib 0.017
TNS 2024syj [ZTF24abamahv] 03:03:11.683 +20:37:03.93 SDSS J030311.66+203704.1 Noisy spectrum. This object has been suggested as a SLSN candidate by ZTF (AstroNote 2024-279) 03:03:11.683 +20:37:03.93
TNS 2024vkk [ZTF24abgzpea] 23:07:44.737 -13:00:32.03 SN 0.068 GALEXASC J230744.74-130031.4 0.0683 Galaxy lines but broader H-alpha from SN. Redshift from NED. 23:07:44.740 -13:00:32.15 SN 0.068
TNS 2024vkn [ZTF24abhhzrp] 03:30:21.675 -14:04:13.76 SN Ic 0.031 SDSS J033021.69-140413.9 Good match to SN Ic-BL as well. Redshift from emission lines of the host galaxy 03:30:21.675 -14:04:13.76 SN Ic 0.031

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