AstroNote 2024-248

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DRAFT
2024-09-09 16:30:50
Type: Object/s-Discovery/Classification
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+
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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2024twn [ZTF24abdouuc]02:07:59.402-06:07:19.59SN Ia0.12GALEXASCJ020759.39-060719.9+6Redshift from spectral matching.02:07:59.409-06:07:19.71SN Ia0.12
TNS2024uae [ATLAS24npe]05:04:43.254-31:55:58.16SN Ia0.08+5Redshift from spectral matching.05:04:43.262-31:55:58.18SN Ia0.08
TNS2024tyd [ATLAS24nnx]02:39:24.437-46:09:28.60SN Ia0.05GALEXASCJ023924.46-460930.4+6Redshift from spectral matching.02:39:24.413-46:09:28.23SN Ia0.05
TNS2024txv [ZTF24abeclwh]00:21:47.034-24:21:08.91SN Ia0.05+6Classification consistent with that reported in the TNS Classification Report No. 17951.00:21:47.037-24:21:08.97SN Ia0.05
TNS2024tzd [GOTO24ffs]02:34:23.453+16:55:06.07SN Ia0.042MASX J02342372+1655039+2Redshift from spectral matching.02:34:23.470+16:55:05.16SN Ia0.04
TNS2024uad [ATLAS24npd]02:24:32.329-49:39:14.86SN Ia0.07+4Redshift from spectral matching.02:24:32.329-49:39:14.86SN Ia0.07
TNS2024uns [ZTF20acwtqim]02:34:48.319-07:41:00.83SN Ia0.022SDSS J023448.44-074100.9-10Classification consistent with that reported in the TNS Classification Report No. 17953.02:34:48.340-07:41:01.00SN Ia0.022
TNS2024usx [ATLAS24nwt]21:49:45.521-29:02:35.65SN Ia0.0822MASX J21494549-29023330.0825+5Redshift from NED.21:49:45.521-29:02:35.65SN Ia0.082
TNS2024ulr [ZTF24abevlcq]23:58:46.616-07:42:10.11SN Ia0.076SDSS J235846.59-074210.80.076487+3Redshift from NED.23:58:46.616-07:42:10.11SN Ia0.076
TNS2024ugd [ZTF24abenaks]22:54:03.677-29:37:27.49SN Ia0.0712MASX J22540369-29373010.071at peakRedshift from NED.22:54:03.677-29:37:27.49SN Ia0.071
TNS2024ugs [ZTF24abeuxkq]21:52:31.895+03:04:36.94SN Ia0.07SDSS J215232.04+030443.0-4Redshift from spectral matching.21:52:31.895+03:04:36.94SN Ia0.07
TNS2024ufy [ATLAS24nry]22:08:58.058-34:31:19.42SN Ia0.08-3Redshift from spectral matching.22:08:58.086-34:31:18.73SN Ia0.08
TNS2024tzb [GOTO24fee]21:49:07.569-29:13:17.00SN Ia-91T-like0.08-1Redshift from spectral matching.21:49:07.558-29:13:17.09SN Ia-91T-like0.08
TNS2024ulb [ATLAS24nuo]01:23:48.883-15:42:35.74SN Ia-91bg-like0.0442MASX J01234900-15423500.044104+2Redshift from NED.01:23:48.965-15:42:36.90SN Ia-91bg-like0.044
TNS2024uzi [ATLAS24nzi]21:39:54.563-36:02:00.27SN Ic0.017ESO403-G0120.017182-15Redshift from NED.21:39:54.520-36:02:00.31SN Ic0.017
TNS2024ueo [ZTF24abeivan]03:20:22.252-05:36:22.54SN IIn0.036+8Classification consistent with that reported in the TNS Classification Report No. 17952.03:20:22.260-05:36:22.72SN IIn0.036
TNS2024uki [ATLAS24ntr]04:27:18.094-04:55:12.77SN II0.04SDSS J042718.19-045513.0+11Redshift from spectral matching.04:27:18.135-04:55:13.03SN II0.04
TNS2024qtn [GOTO24ebp]00:58:58.609-18:44:47.06LBV0.007ESO541-G0040.006668Redshift from NED.00:58:58.609-18:44:47.06LBV0.007
TNS2024uwq [ATLAS24nyn]20:24:36.761-43:40:09.88SN Ic-BL0.009NGC69020.009326-5Redshift from NED.20:24:36.770-43:40:10.13SN IIb0.009
TNS2024uxw [ATLAS24nza]21:09:04.777-25:40:22.71Galaxy0.0492MASX J21090474-25402040.048624Redshift from NED.21:09:04.765-25:40:22.62Galaxy0.049
TNS2024uhx [ZTF24abeiasc]00:30:05.627+11:54:45.83SN0.046SDSS J003005.95+115444.4Blue featureless spectrum. Redshift from potential galaxy emission lines, but not secure.00:30:05.624+11:54:45.80SN0.046