DRAFT
2024-12-08 14:47:01
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.360....1S
ePESSTO+ spectroscopic classification of optical transients
Authors: R. Santos, J. Duarte (Lisbon), M. Ghendrih, A. Milligan, G. Dimitriadis, L. Makrygianni, M. Smith (Lancaster), A. Kumar (Warwick), G. Pignata (UTA), M. Dennefeld (IAP), S. Srivastav (Oxford), M. Fulton (QUB), A. Reguitti (INAF-OAPd), J. Anderson (ESO), T. Müller Bravo (Dublin), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (QUB), O. Yaron (Weizmann), D. Young (QUB), E. Zimmerman, A. Horowicz (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, 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 2 Type II's and 2 Type Ia's (one of which is likely a 91T-like) . We encourage followup 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 Young Supernova Experiment (Pan-STARRS - see Jones et al. 2021, 2021ApJ...908..143J), 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 Dec 07, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520A, 16A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), Superfit (Howell et al. 2005 2005ApJ...634.1190H) 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 2024admm [ZTF24abwniiv] 03:36:06.803 -05:10:30.12 SN II 0.016 PS1 101790540289671286 Redshift obtained from host emission lines in the transient spectrum 03:36:06.800 -05:10:30.14 SN II 0.016
TNS 2024ackp [ATLAS24qrg] 03:01:03.888 +20:29:44.92 SN II 0.0539 Redshift obtained from host emission lines in the transient spectrum 03:01:03.894 +20:29:44.91 SN II 0.0539
TNS 2024ackn [PS24lof] 03:53:27.582 -26:10:22.35 SN Ia 0.0696 0.069561 –3 to +3 Redshift of the host galaxy obtained from NED 03:53:27.585 -26:10:22.16 SN Ia 0.0696
TNS 2024acaf [PS24lji] 02:07:48.625 -15:41:14.65 SN Ia-91T-like 0.09 –3 to +3 Redshift derived from template fitting using SNID 02:07:48.630 -15:41:14.64 SN Ia-91T-like 0.09

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