DRAFT
2026-06-07 16:39:04
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: E. Charleton (Southampton), M. Ghendrih (Lancaster), C.G. Touchard-Paxton (Trinity), P. Clark, M. Quilt, C. Dashwood Brown (Southampton), Claudia Gutiérrez (ICE-CSIC), S. Srivastav (Oxford), M. Dennefeld (IAP Paris), J. Sollerman (Stockholm), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), P. Pessi (Warsaw), O. Yaron (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt, K. W. Smith (Oxford/QUB), H. Stevance (Oxford), D. R. Young, 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), T.-W. Chen (NCU), C. Stubbs (Harvard)
Source Group: ePESSTO+
Keywords: Spectroscopy, Transient, Supernova, Optical
Abstract:
This report includes classifications of 2 Type Ia SNe.

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 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 2026 June 6, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID-SAGE (Stoppa F., Smartt S.~J., 2026, arXiv, arXiv:2603.28741. doi:10.48550/arXiv.2603.28741).

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 2026nnr [ATLAS26ghz] 16:36:08.776 -77:12:39.19 SN Ia 0.07 ATLAS Post peak Redshift and phase from SNID-SAGE 16:36:08.776 -77:12:39.19 SN Ia 0.07
TNS 2026nwb [ATLAS26gnw] 01:14:29.709 -31:10:51.59 SN Ia 0.019 ESO412-G021 0.019 ATLAS Post peak Redshift from host found in NED, phase from SNID-SAGE 01:14:29.709 -31:10:51.59 SN Ia 0.019

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