AstroNote 2024-333

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DRAFT

2024-11-13 17:54:51

Type: Object/s-Discovery/Classification

Bibcode: 2024TNSAN.333....1H

ePESSTO+ spectroscopic classification of optical transients

Authors: Y. Hu, K. Tsalapatas, P. J. Pessi, A. Gangopadhyay, A. Singh, A Gkini, J. Sollerman (SU), M. Dennefeld (IAP), T-W. Chen (NCU), J. Anderson (ESO), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), O. Yaron (Weizmann), D. Young (QUB), E. Zimmerman (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, 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+

Keywords: Transient, Supernova, Optical, Spectroscopy

Abstract:

This report includes classifications of 3 Type Ia SNe and 1 Type II SN.

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 12, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) 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.

Related Objects: Show current TNS values

Catalog	Name	Reported RA	Reported DEC	Reported Obj-Type	Reported Redshift	Host Name	Remarks	TNS RA	TNS DEC	TNS Obj-Type	TNS Redshift
TNS	2024zzt [GOTO24hxz]	22:36:35.986	-47:46:47.69	SN Ia	0.08	WISEA J223637.35-474654.1	Best match with Type Ia SN. Redshift from NGSF.	22:36:35.986	-47:46:47.69	SN Ia	0.08
TNS	2024zct [ATLAS24pra]	03:56:13.909	-31:01:58.95	SN Ia	0.1	WISEA J035613.79-310155.9	Best match with Type Ia SN. Redshift from NGSF.	03:56:13.909	-31:01:58.95	SN Ia	0.1
TNS	2024aatk [ZTF24abrimib]	08:33:45.883	-19:20:59.81	SN Ia	0.06	WISEA J083345.73-192100.1	Best match with Type Ia. Redshift from SNID.	08:33:45.894	-19:20:59.84	SN Ia	0.06
TNS	2024aald [GOTO24hzm]	10:36:52.805	-36:05:44.25	SN II	0.04		Best match with Type II. Redshift from SNID.	10:36:52.805	-36:05:44.25	SN II	0.04

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