AstroNote 2024-245

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DRAFT

2024-09-07 17:25:47

Type: Object/s-Discovery/Classification

Bibcode: 2024TNSAN.245....1R

ePESSTO+ spectroscopic classification of optical transients

Authors: Mauricio Ramirez, Bastian Ayala, Raya Dastidar (UNAB), Amit Kumar (Warwick), Lluís Galbany (CSIC), Anwesha Sahu (Warwick), S. Benetti (INAF), J. Anderson (ESO), T. Müller Bravo (Southampton), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (QUB), 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, D. R. Young, M. Fulton, M. McCollum, T. Moore, 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 the classifications of 2 Type Ia's and 1 Type IIP, and 1 unclassified event exhibiting a blue, featureless continuum. We encourage follow-up 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) and 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 September 06, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) 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	Phase (days)	Remarks	TNS RA	TNS DEC	TNS Obj-Type	TNS Redshift
TNS	2024uqg [ZTF24abfmniy]	02:55:19.495	+08:49:38.21	SN Ia	0.0267	IC 1865	0.026672	-9	Redshift from NED.	02:55:19.490	+08:49:37.96	SN Ia	0.0267
TNS	2024ula [GOTO24fnh]	23:26:07.815	-38:06:25.05	SN Ia	0.038			-5	Redshift from spectral matching with SNID.	23:26:07.840	-38:06:25.27	SN Ia	0.038
TNS	2024pll [ATLAS24lfc]	01:28:33.738	+14:47:55.97	SN IIP	0.046	SDSS J012833.69+144756.1		+45	Redshift from spectral matching with SNID.	01:28:33.739	+14:47:56.06	SN IIP	0.046
TNS	2024qpn [ZTF24aawktvl]	02:14:29.931	+27:24:04.44			SDSS J021429.76+272404.0			Noisy, blue and featureless spectrum.	02:14:29.926	+27:24:04.67

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