DRAFT
2024-11-21 16:31:09
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.344....1T
ePESSTO+ spectroscopic classification of optical transients
Authors: A. Townsend (HU-Berlin), C. Gutiérrez (IEEC/ICE-CSIC), A. Aryan, A. Sankar.K, T.-W. Chen, C.-H. Lai, Y.-H. Lee (NCU), R. Santos, J. Duarte, S. González-Gaitán (CENTRA-IST), 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. Leloudas (DTU), P. Jonker (Radboud), M. Nicholl (QUB), J. Sollerman (SU), S. Benetti (INAF), P. Charalampopoulos (Univ. Turku), 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, 1 Type II, 1 Type IIn, 1 TDE and 1 CV. 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 Nov 20, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520A, 16A resolution). Classifications were done using GELATO (Harutyunyan et al. 2008 2008A&A...488..383H) 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.

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2024abla [ATLAS24qfw] 03:50:18.947 -47:46:57.96 SN Ia 0.06 WISEA J035019.02-474706.2 -5 Best match with Type Ia. Redshift and phase from GELATO. 03:50:18.947 -47:46:57.96 SN Ia 0.06
TNS 2024able [ATLAS24qga] 01:19:26.508 -51:51:14.81 SN II 0.031 WISEA J011926.57-515114.6 0.031 +6 Best match with Type II. Redshift obtained from NED of the host galaxy. Phase from GELATO. 01:19:26.510 -51:51:15.05 SN II 0.031
TNS 2024ablc [ATLAS24qfy] 23:03:13.162 -53:08:12.60 CV Blue continuum, Balmer absorption at z=0.0. 23:03:13.162 -53:08:12.60 CV
TNS 2024abmf [ATLAS24qgo] 02:01:30.971 -17:15:53.80 SN IIn 0.08 SDSS J020131.08-171554.1 +12 Best match with Type IIn. Redshift and phase from GELATO. 02:01:30.990 -17:15:54.18 SN IIn 0.08
TNS 2024ablg [ATLAS24qgc] 05:44:09.777 -51:24:41.06 TDE 0.052 WISEA J054409.99-512442.6 Tentative TDE classification, based on possible broad He II emission on top of a blue continuum. Several host galaxy lines like [O II], [O III] and H-alpha are detected. The redshift from these host lines is 0.052 05:44:09.830 -51:24:40.79 SN IIP 0.052

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