DRAFT
2023-11-03 14:14:43
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.288....1A
ePESSTO+ spectroscopic classification of optical transients
Authors: A. Aamer, T. Moore (QUB), P. Ramsden (QUB/Birmingham), M. Fulton, K. W. Smith (QUB), S. Benetti (INAF-OAPd), J. Anderson (ESO), T. Müller Bravo (ICE), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl, D. R. Young (QUB), E. zimmerman, O. Yaron, I. Manulis (Weizmann), C. Angus, S. Sim, J. Weston, X. Sheng (QUB), L. Shingles (GSI/QUB), S. Srivastav, S.J. Smartt, (Oxford/QUB), H. Stevance, L. Rhodes, A. Andersson, J. Gillanders, S. Ramaiya (Oxford), L. Denneau, J. Tonry, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech) 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 Ia-91T and one CV.

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 2020arXiv200309052S) and the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S)

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 November 02, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).

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 2023wcl [ATLAS23uue] 19:37:41.839 -20:58:29.03 CV ATLAS Blue featureless continuum in a busy star field. However, Balmer lines not visible at z=0. 19:37:41.839 -20:58:29.03 CV
TNS 2023vfh [ASASSN-23hh] 20:10:44.141 -80:58:09.77 SN Ia 0.02 WISEA J201045.69-805811.3 ASAS-SN +8 to +10 Redshift measured using SNID. 20:10:44.170 -80:58:09.80 SN Ia 0.02
TNS 2023usw [ATLAS23uan] 23:17:57.348 -36:17:36.95 SN Ia-91T-like 0.052 WISEA J231757.04-361741.8 ATLAS +8 to +10 Redshift from narrow Hα host line (see image attached below). 23:17:57.348 -36:17:36.95 SN Ia-91T-like 0.052
File Comments
2023usw_host_lines.png Screenshot of the spectrum of 2023usw with host galaxy signal.

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