AstroNote 2024-227

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DRAFT
2024-08-26 17:46:00
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Mohsen, N. Shitrit (TAU), T. Moore (QUB), R.J. Bruch (TAU), K. Matilainen (UTU), S. Barmentloo (Stockholm), M. Fulton (QUB), I. Arcavi (TAU), J. Sollerman, J. Johansson (OKC), L. Izzo (INAF), E. Zimmerman (WIS), 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, M. Fulton, M. McCollum, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), K. C. Chambers, M. Huber, A. Schultz, T. de Boer, J. Bulger, J. Fairlamb, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, R. J. Wainscoat, H. Gao (IfA, Hawaii), 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)
Source Group: ePESSTO+
Abstract:
This report includes classifications of 3 Type Ia's, 2 Type II's, 2 Type Ia-91T-like, 1 Type Ia-pec, 1 Type Ia-91bg-like, 2 Type Ic-BL, 1 Type Ib, 1 Type Ic, and 2 unclassified SN. We encourage follow-up.

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), the Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), 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 August 24, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using ASTRODASH (Muthukrishna 2019 2019ApJ...885...85M), 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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2024qkw [ZTF24aaxmpyh]00:11:45.256+06:38:46.74SN Ia-pec0.0461Redshift from template matching with ASTRODASH.00:11:45.256+06:38:46.74SN Ia-pec0.0461
TNS2024slc [ZTF24abboumm]16:58:12.647+02:04:35.32SN Ia0.07PS1 110492545527692138Redshift from template matching with ASTRODASH.16:58:12.656+02:04:35.19SN Ia0.07
TNS2024rpt [GOTO24enu]23:06:10.493-19:50:14.22SN Ia0.070.074962Redshift from NED (SLS).23:06:10.493-19:50:14.22SN Ia0.07
TNS2024ryr20:32:13.277+18:05:48.74SN Ic-BL0.092220:32:13.277+18:05:48.74SN Ic-BL0.0922
TNS2024sky18:02:56.523-66:25:43.63SN II0.012418:02:56.523-66:25:43.63SN II0.0124
TNS2024stt22:23:42.752-63:09:27.84SN Ia-91bg-like0.04422:23:42.752-63:09:27.84SN Ia-91bg-like0.044
TNS2024stj01:11:42.061-62:47:07.93SN Ic-BL0.04Redshift from template matching with SNID.01:11:42.050-62:47:08.05SN Ic-BL0.04
TNS2024seh [ZTF24abavoif]21:55:50.906-03:05:23.10SN0.056Redshift using galaxy lines in the spectrum.21:55:50.900-03:05:23.25SN II0.056
TNS2024rcc23:30:11.207+18:26:12.54SN Ia-91T-like0.14SDSS J233011.21+182611.923:30:11.207+18:26:12.54SN Ia-91T-like0.14
TNS2024sfx02:08:43.800-16:13:01.85SN Ia0.063402:08:43.813-16:13:01.85SN Ia0.0634
TNS2024ske23:04:22.394-16:51:00.43SN Ia-91T-like0.078823:04:22.394-16:51:00.43SN Ia-91T-like0.0788
TNS2024ssn01:29:59.370+00:29:29.56SN Ib0.03301:29:59.381+00:29:29.52SN Ib0.033
TNS2024ssh01:52:14.120-33:32:49.52SN II0.01901:52:14.110-33:32:49.76SN II0.019
TNS2024rrn00:52:21.281-26:34:30.60SN Ic0.03500:52:21.281-26:34:30.60SN Ic0.035
TNS2024skt23:46:12.468-75:16:24.94SN0.020.021Redshift from NED23:46:12.468-75:16:24.94SN0.02