DRAFT
2024-11-12 17:59:07
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.332....1G
ePESSTO+ spectroscopic classification of optical transients
Authors: A. Gkini, A. Gangopadhyay, A. Singh, Y. Hu, K. Tsalapatas, P. J. Pessi, J. Sollerman (SU), L. Galbany (ICE-CSIC), S. Srivastav (Oxford), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), O. Yaron (Weizmann), D. Young (QUB), S. Benetti (INAF), E. Zimmerman (Weizmann), 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 9 Type Ia SNe, 1 Type Ia-CSM SN, 2 Type IIn, 1 Nova and 1 CV.

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), 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), BlackGEM, and by the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 Nov 11, using EFOSC2 with Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520, 16A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) 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 2024aawt [ATLAS24qcz] 20:57:51.493 -41:38:38.80 CV This object was in the 90% sky localisation of the GW event S241109bn (GCN 38168) 20:57:51.500 -41:38:39.12 CV
TNS 2024aavj [ATLAS24qbz] 00:43:21.268 -50:10:05.70 SN IIn 0.029 A81 004106-5029A 0.029 Redshift obtained from NED of the host galaxy and agrees with the narrow Balmer lines. Best matches with a Type IIn using NGSF. 00:43:21.300 -50:10:05.70 SN IIn 0.029
TNS 2024zxt [ATLAS24pxa] 02:29:24.000 -33:08:24.38 SN Ia 0.08 WISEA J022923.56-330826.2 0.0797 Redshift from NED of the host galaxy. Best match using SNID yields a Type Ia. 02:29:24.000 -33:08:24.38 SN Ia 0.08
TNS 2024aanv [ZTF24abpynxw] 21:12:21.938 -18:04:48.34 SN Ia 0.09 WISEA J211221.96-180448.5 Best match from NGSF yields a Type Ia at z=0.09. Our classification is consistent with TNS (Classification Report No. 18665). 21:12:21.938 -18:04:48.34 SN Ia 0.09
TNS 2024aavk [GOTO24idv] 04:34:15.781 -63:28:09.41 SN Ia 0.06 WISEA J043415.39-632808.6 Best match from NGSF yields a Type Ia at z=0.06 04:34:15.781 -63:28:09.41 SN Ia 0.06
TNS 2024zui [GOTO24huo] 02:42:36.991 -32:39:15.91 SN Ia 0.08 Best match from NGSF yields a Type Ia at z=0.08 02:42:36.990 -32:39:15.87 SN Ia 0.08
TNS 2024aawq [ZTF24abrmdti] 02:04:27.018 +16:13:18.97 SN Ia 0.06 WISEA J020426.62+161315.7 Best match from NGSF yields a Type Ia at z=0.06 02:04:27.009 +16:13:18.81 SN Ia 0.06
TNS 2024ztk [BGEM J032948.79-360448.7] 03:29:48.795 -36:04:48.75 SN Ia-CSM 0.1 WISEA J032948.95-360446.2 Best match from NGSF yields a Type Ia-CSM at z=0.10 03:29:48.820 -36:04:48.47 SN Ia-CSM 0.1
TNS 2024aaar [GOTO24hyp] 04:25:53.556 -30:18:32.25 SN Ia 0.056 WISEA J042553.74-301827.7 0.056 Redshift obtained from NED of the host galaxy. Best matches a Type Ia using NGSF and SNID. 04:25:53.560 -30:18:32.33 SN Ia 0.056
TNS 2024zvq [ATLAS24pvt] 03:41:43.115 -74:45:28.71 SN Ia 0.05 WISEA J034143.29-744528.3 Best match with NGSF yields a Type Ia at z=0.05 03:41:43.115 -74:45:28.71 SN Ia 0.05
TNS 2024aaml [GOTO24ial] 06:04:08.675 -35:21:40.77 SN Ia 0.05 WISEA J060408.61-352138.0 Best match from NGSF yields a Type Ia at z=0.05 06:04:08.697 -35:21:41.09 SN Ia 0.05
TNS 2024zwm [ZTF24abpvane] 05:12:01.178 -00:54:06.12 SN Ia 0.09 SDSS J051201.10-005406.1 Best match from SNID yields a Type Ia at z=0.09 05:12:01.178 -00:54:06.12 SN Ia 0.09
TNS 2024aapx [ATLAS24pzv] 11:54:43.008 -76:47:46.80 SN IIn 0.035 WISEA J115441.45-764757.7 0.035 Redshift from narrow Balmer emission lines. Best match with NGSF yields a Type IIn SN. The spectrum suffers substantial contribution from the host galaxy. 11:54:43.008 -76:47:46.80 SN IIn 0.035
TNS 2024aawe [ATLAS24qcl] 09:59:54.092 +05:20:46.56 Nova 0.001 UGC 5373 0.001 Redshift from Balmer emission lines in the spectra. The spectrum suggests a Nova and is in concordance with AstroNote 2024-330. 09:59:54.088 +05:20:46.53 Nova 0.001

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