DRAFT
2023-09-19 13:21:33
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.252....1F
ePESSTO+ spectroscopic classification of optical transients
Authors: B. Fitzpatrick, R. Byrne, M. Fraser (Univ. College Dublin), S. Benetti (INAF-OAPd), S. Srivastav (QUB), C. Gutiérrez (IEEC/ICE-CSIC), T. Moore (QUB), J. Sollerman (Stockholm), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), O. Yaron (Weizmann), D. Young (QUB), 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, M. Fulton, M. McCollum, 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 one Type Ia and one Type II SNe. We note that SN 2023rfn shows a relatively rapid decline over 10 days from maximum light of 1.1 mag in g and 0.6 mag in r-band.

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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 Sept 18, 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.

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 2023rgb [ATLAS23ryz] 17:48:26.078 +17:27:42.40 SN Ia 0.04 3 Redshift determined from SN spectrum 17:48:26.078 +17:27:42.40 SN Ia 0.04
TNS 2023rfn [ATLAS23ryc] 18:11:56.577 +24:02:43.52 SN II 0.0215 20 Redshift from NED; decline of 1.1 mag in g-band and 0.6 mag in r-band over 10 days. 18:11:56.577 +24:02:43.52 SN II 0.0215

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