AstroNote 2024-348

Primary tabs

DRAFT

2024-11-22 16:32:41

Type: Object/s-Discovery/Classification

Bibcode: 2024TNSAN.348....1G

ePESSTO+ spectroscopic classification of optical transients

Authors: C. Gutiérrez (IEEC/ICE-CSIC), A. Townsend (HU-Berlin), A. Aryan, A. Sankar K, T.-W. Chen (NCU), R. Santos, J. Duarte, S. González-Gaitán (Lisbon), J. Anderson (ESO), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), O. Yaron (Weizmann), D. R. Young (QUB), E. Zimmerman, A. Horowicz (Weizmann), I. Arcavi (TAU), G. Dimitriadis (Lancaster), J. Sollerman, Priscila J. Pessi (SU), 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 1 Type Ia-91T, 1 Type II, 1 Type Ic, and 1 blue featureless transient. 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 the Xingming Observatory Sky Survey (XOSS).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 Nov 21, 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), NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H) and DASH (Muthukrishna et al. 2019 2019ApJ...885...85M).

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	2024aayf [ZTF24absfzkh]	01:27:07.958	-03:05:36.85	SN II	0.048	SDSS J012707.98-030537.7	0.048	+6	Best match to Type II SNe from GELATO. Phase from GELATO. Redshift from SDSS host and confirmed from H-alpha and H-beta lines in spectrum.	01:27:07.994	-03:05:37.54	SN II	0.0477
TNS	2024abme [ATLAS24qgn]	01:55:13.139	-21:44:54.01	SN Ia-91T-like	0.04	GALEXASC J015513.59-214454.5		-4	Best match with Type Ia-91T like from GELATO. Redshift from DASH and GELATO. Phase from GELATO.	01:55:13.139	-21:44:54.01	SN Ia-91T-like	0.04
TNS	2024abfk [ATLAS24qeo]	23:41:39.490	-69:46:14.12	SN Ic	0.036				Good match with Type Ic spectrum using SNID but also match with Type Ia-pec SN 2013bh using NGSF. Redshift measured from HII region emission lines (H-alpha, H-beta, [O III]).	23:41:39.490	-69:46:14.12	SN Ic	0.036
TNS	2024abop [KATS24W002]	01:03:14.642	-06:13:04.19	SN	0.035	SDSS J010314.62-061303.5			The spectrum is blue and featureless. Redshift measured from host H-alpha, H-beta and [O III] 5007, 4959 emission lines.	01:03:14.637	-06:13:04.08	SN II	0.0355

Main menu

Primary tabs