DRAFT
2024-09-09 16:30:50
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.248....1R
ePESSTO+ spectroscopic classification of optical transients
Authors: Mauricio Ramirez, Bastian Ayala, Raya Dastidar (UNAB), Amit Kumar (Warwick), Lluís Galbany (CSIC), Anwesha Sahu (Warwick), O. Yaron (Weizmann), J. Sollerman (OKC), S. Srivastav(Oxford/QUB), J. Anderson (ESO), T. Müller Bravo (Southampton), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (QUB), D. Young (QUB), 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, D. R. Young, M. Fulton, M. McCollum, T. Moore, 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 14 Type Ia's (which contains 1 Ia-91T and 1 Ia-91bg like), 1 Type Ic, 1 Type Ic-BL, 1 Type II, 1 Type IIn, 1 SN, 1 LBV, and 1 galaxy. 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), 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) and 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 September 08, 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 2024twn [ZTF24abdouuc] 02:07:59.402 -06:07:19.59 SN Ia 0.12 GALEXASCJ020759.39-060719.9 +6 Redshift from spectral matching. 02:07:59.409 -06:07:19.71 SN Ia 0.12
TNS 2024uae [ATLAS24npe] 05:04:43.254 -31:55:58.16 SN Ia 0.08 +5 Redshift from spectral matching. 05:04:43.262 -31:55:58.18 SN Ia 0.08
TNS 2024tyd [ATLAS24nnx] 02:39:24.437 -46:09:28.60 SN Ia 0.05 GALEXASCJ023924.46-460930.4 +6 Redshift from spectral matching. 02:39:24.413 -46:09:28.23 SN Ia 0.05
TNS 2024txv [ZTF24abeclwh] 00:21:47.034 -24:21:08.91 SN Ia 0.05 +6 Classification consistent with that reported in the TNS Classification Report No. 17951. 00:21:47.037 -24:21:08.97 SN Ia 0.05
TNS 2024tzd [GOTO24ffs] 02:34:23.453 +16:55:06.07 SN Ia 0.04 2MASX J02342372+1655039 +2 Redshift from spectral matching. 02:34:23.470 +16:55:05.16 SN Ia 0.04
TNS 2024uad [ATLAS24npd] 02:24:32.329 -49:39:14.86 SN Ia 0.07 +4 Redshift from spectral matching. 02:24:32.329 -49:39:14.86 SN Ia 0.07
TNS 2024uns [ZTF20acwtqim] 02:34:48.319 -07:41:00.83 SN Ia 0.022 SDSS J023448.44-074100.9 -10 Classification consistent with that reported in the TNS Classification Report No. 17953. 02:34:48.340 -07:41:01.00 SN Ia 0.022
TNS 2024usx [ATLAS24nwt] 21:49:45.521 -29:02:35.65 SN Ia 0.082 2MASX J21494549-2902333 0.0825 +5 Redshift from NED. 21:49:45.521 -29:02:35.65 SN Ia 0.082
TNS 2024ulr [ZTF24abevlcq] 23:58:46.616 -07:42:10.11 SN Ia 0.076 SDSS J235846.59-074210.8 0.076487 +3 Redshift from NED. 23:58:46.616 -07:42:10.11 SN Ia 0.076
TNS 2024ugd [ZTF24abenaks] 22:54:03.677 -29:37:27.49 SN Ia 0.071 2MASX J22540369-2937301 0.071 at peak Redshift from NED. 22:54:03.677 -29:37:27.49 SN Ia 0.071
TNS 2024ugs [ZTF24abeuxkq] 21:52:31.895 +03:04:36.94 SN Ia 0.07 SDSS J215232.04+030443.0 -4 Redshift from spectral matching. 21:52:31.895 +03:04:36.94 SN Ia 0.07
TNS 2024ufy [ATLAS24nry] 22:08:58.058 -34:31:19.42 SN Ia 0.08 -3 Redshift from spectral matching. 22:08:58.086 -34:31:18.73 SN Ia 0.08
TNS 2024tzb [GOTO24fee] 21:49:07.569 -29:13:17.00 SN Ia-91T-like 0.08 -1 Redshift from spectral matching. 21:49:07.558 -29:13:17.09 SN Ia-91T-like 0.08
TNS 2024ulb [ATLAS24nuo] 01:23:48.883 -15:42:35.74 SN Ia-91bg-like 0.044 2MASX J01234900-1542350 0.044104 +2 Redshift from NED. 01:23:48.965 -15:42:36.90 SN Ia-91bg-like 0.044
TNS 2024uzi [ATLAS24nzi] 21:39:54.563 -36:02:00.27 SN Ic 0.017 ESO403-G012 0.017182 -15 Redshift from NED. 21:39:54.520 -36:02:00.31 SN Ic 0.017
TNS 2024ueo [ZTF24abeivan] 03:20:22.252 -05:36:22.54 SN IIn 0.036 +8 Classification consistent with that reported in the TNS Classification Report No. 17952. 03:20:22.260 -05:36:22.72 SN IIn 0.036
TNS 2024uki [ATLAS24ntr] 04:27:18.094 -04:55:12.77 SN II 0.04 SDSS J042718.19-045513.0 +11 Redshift from spectral matching. 04:27:18.135 -04:55:13.03 SN II 0.04
TNS 2024qtn [GOTO24ebp] 00:58:58.609 -18:44:47.06 LBV 0.007 ESO541-G004 0.006668 Redshift from NED. 00:58:58.609 -18:44:47.06 LBV 0.007
TNS 2024uwq [ATLAS24nyn] 20:24:36.761 -43:40:09.88 SN Ic-BL 0.009 NGC6902 0.009326 -5 Redshift from NED. 20:24:36.770 -43:40:10.13 SN IIb 0.009
TNS 2024uxw [ATLAS24nza] 21:09:04.777 -25:40:22.71 Galaxy 0.049 2MASX J21090474-2540204 0.048624 Redshift from NED. 21:09:04.765 -25:40:22.62 Galaxy 0.049
TNS 2024uhx [ZTF24abeiasc] 00:30:05.627 +11:54:45.83 SN 0.046 SDSS J003005.95+115444.4 Blue featureless spectrum. Redshift from potential galaxy emission lines, but not secure. 00:30:05.624 +11:54:45.80 SN 0.046

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