AstroNote 2024-228

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DRAFT

2024-08-27 15:06:42

Type: Object/s-Discovery/Classification

Bibcode: 2024TNSAN.228....1S

ePESSTO+ spectroscopic classification of optical transients

Authors: N. Shitrit (TAU), T. Moore (QUB), S. Faris (TAU), R.J. Bruch (TAU), K. Matilainen (UTU), S. Barmentloo (Stockholm), M. Fulton (QUB), I. Arcavi (TAU), J. Sollerman (OKC), S. Benetti (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+

Keywords: Transient, Supernova, Optical, Spectroscopy

Abstract:

This report includes classifications of 2 Type Ia's, 1 Type II. 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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 August 26, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using ASTRODASH (Muthukrishna 2019 2019ApJ...885...85M), SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H), 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.

Related Objects: Show current TNS values

Catalog	Name	Reported RA	Reported DEC	Reported Obj-Type	Reported Redshift	Host Name	Host Redshift	Remarks	TNS RA	TNS DEC	TNS Obj-Type	TNS Redshift
TNS	2024snk [ZTF24abcnnlb]	20:51:31.476	-19:29:09.80	SN Ia	0.096			Redshift from template matching with NGSF.	20:51:31.471	-19:29:10.02	SN Ia	0.096
TNS	2024skt [ATLAS24ncu]	23:46:12.468	-75:16:24.94	SN	0.02		0.021	Redshift from NED	23:46:12.468	-75:16:24.94	SN	0.02
TNS	2024rjc [ZTF24aayrqqk]	02:45:20.575	+20:04:21.94	SN Ia	0.11	SDSS J024520.53+200421.4		Redshift from template matching with Astrodash.	02:45:20.575	+20:04:22.05	SN Ia	0.11
TNS	2024qux [ATLAS24mdt]	04:58:12.030	-20:22:02.17	SN II	0.023		0.023	Redshift from NED.	04:58:12.030	-20:22:02.17	SN II	0.023

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