AstroNote 2024-323

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DRAFT
2024-11-07 17:21:25
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: K. Tsalapatas, Y. Hu, P. J. Pessi, A. Gangopadhyay, A. Singh, A. Gkini, J. Sollerman, S. Barmentloo (Stockholm), T. Kravtsov (Turku), G. Pignata (UTA), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), O. Yaron (Weizmann), D. Young (QUB), S. Benetti (INAF), N. Ihanec (ING,Warsaw), E. Zimmerman (Weizmann), Asaf 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, S. Srivastav, D. R. Young, M. Fulton, 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+
Abstract:
This report includes classifications of 6 Type Ia SNe, 1 Type II SN, 1 AGN and 1 blue featureless transient.

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 by 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 Nov 6, using EFOSC2 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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2024aalt [ATLAS24pyg]23:23:33.532+08:18:37.92SN Ia0.051WISEA J232333.68+081838.4Redshift from SNID23:23:33.532+08:18:37.92SN Ia0.051
TNS2024zkr [ZTF18abuxiwj]01:54:22.956-05:59:50.42AGN0.078SDSS J015422.95-055950.7Redshift from the host lines. The spectrum shows Bowen fluorescence lines N III and He II. Potentially a TDE-Bowen.01:54:22.956-05:59:50.42AGN0.078
TNS2024zzh [ZTF24abpzvqo]23:05:56.647-10:49:49.96SN Ia0.082MASX J23055627-1049491Redshift from SNID23:05:56.647-10:49:49.96SN Ia0.08
TNS2024aall [ZTF24abprrom]22:30:50.578-21:28:52.79SN Ia0.07WISEA J223050.73-212853.9Redshift form NGSF22:30:50.578-21:28:52.79SN Ia0.07
TNS2024aaoh [ZTF24abqxysf]22:55:19.455-19:28:28.450.08WISEA J225519.46-192828.1Redshift from host lines. Blue featureless transient.22:55:19.455-19:28:28.450.08
TNS2024zvt [ATLAS24pwa]23:14:52.957-11:57:53.73SN Ia0.087WISEA J231453.44-115741.90.086637Redshift from host galaxy23:14:52.958-11:57:53.89SN Ia0.087
TNS2024zol [GOTO24hnq]06:45:33.700-42:55:38.21SN Ia0.033WISEA J064528.52-425554.60.03317Redshift from host galaxy06:45:33.700-42:55:38.10SN Ia0.033
TNS2024zvx [ATLAS24pwf]10:01:05.223-85:45:45.46SN Ia0.064WISEA J100110.81-854550.3Redshift from NGSF10:01:05.223-85:45:45.46SN Ia0.064
TNS2024ydr [ZTF18adowxvg]08:22:10.666+03:16:04.71SN II0.014IC 05030.013756Redshift from host galaxy08:22:10.666+03:16:04.71SN IIP0.01376