DRAFT
2024-10-04 18:35:51
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.284....1G
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Ghendrih, A. Milligan, G. Dimitriadis (Lancaster), J. Duarte, R. Santos, S. Gonzalez-Gaitan (Lisbon), T. Killestein (Turku), A. Sankar K (NCU), E. Concepcion (Nova Gorica), S. Benetti (INAF), C. Gutierrez (ICE-CSIC), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (TCD), M. Nicholl (QUB), O. Yaron (Weizmann), D. Young (QUB), S. J. Smartt (Oxford/QUB), K. W. Smith, D. R. Young, M. Fulton, S. Srivastav, M. Nicholl (QUB), 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), A. Rest (STScI), C. Stubbs (Harvard), 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), K. W. Smith, M. Fulton, M. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), E. Zimmerman (WIS)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 4 Type Ia's, 2 Type II's, 1 Type Ic and 1 Type Ibn. 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 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 Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD) and by the ESA Gaia Photometric Science Alerts Team DPAC.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 October 3, using EFOSC2, Grism11 (3380-7520, 13.8A resolution) and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H) 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 2024wxm [Gaia24crr] 23:53:36.940 -46:44:20.65 SN Ia 0.07 2MASS J23533687-4644222 at peak Redshift from SNID 23:53:36.940 -46:44:20.65 SN Ia 0.07
TNS 2024wts [ATLAS24oop] 00:30:28.407 -32:58:56.30 SN Ia 0.1 +4 to +7 Redshift from SNID 00:30:28.410 -32:58:56.04 SN Ia 0.1
TNS 2024wsn [ATLAS24onq] 00:23:24.395 +08:44:24.81 SN Ic 0.05 SDSS J002324.50+084424.6 around peak Redshift from SNID 00:23:24.395 +08:44:24.81 SN Ic 0.05
TNS 2024vvs [ZTF24abilpob] 00:06:36.596 +08:22:19.65 SN IIb 0.018 NGC 7834 0.017449 Classified by ZTF as SN II (Classification Report Nr 18323). Redshift from host 00:06:36.596 +08:22:19.65 SN IIb 0.018
TNS 2024xbf [ZTF22aaqclvg] 23:58:15.966 -09:27:31.16 SN Ia 0.079 SDSS 235815.92-092731.1 0.078816 Redshift from host 23:58:15.966 -09:27:31.16 SN Ia 0.079
TNS 2024wqv [ATLAS24onc] 01:37:59.040 -40:04:23.45 SN II 0.02 ESO 297- G 016 0.019964 +4 to +7 Redshift from host 01:37:59.040 -40:04:23.45 SN II 0.02
TNS 2024vta [GOTO24gal] 02:47:43.930 -14:52:11.89 SN Ibn 0.066 WISEA J024744.14-145208.4 Redshift from galaxy emission lines 02:47:43.930 -14:52:11.89 SN Ibn 0.066
TNS 2024vdu [ATLAS24ocn] 02:17:52.501 -09:47:51.11 SN Ia 0.055 SDSS J021752.43-094754.0; 0.054579 2 weeks post-max Redshift from host 02:17:52.501 -09:47:51.11 SN Ia 0.055

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