DRAFT
2023-12-30 13:54:46
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.360....1B
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Barmentloo, P. Pessi, S. Brennan, J. Sollerman (OKC/SU), M. Gromadzki (Warsaw), J. Anderson (ESO), T.-W. Chen (NCU), 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, 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 2 Type Ia supernovae and one unknown object.

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) and the Zwicky Transient Facility ZTF (Bellm et al. 2019 2019PASP..131a8002B) data stream processed through the Lasair broker (Smith et al. 2019 2019RNAAS...3...26S) and by the ALeRCE broker (Forster et al. 2020 2021AJ....161..242F),

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 Dec 29, 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 2023aaqu [ATLAS23xua] 00:23:10.447 -52:25:15.32 SN Ia 0.031 at max Redshift found using SNID 00:23:10.430 -52:25:15.42 SN Ia 0.031
TNS 2023acbq [ZTF23abvtzdz] 03:13:18.858 +17:59:28.03 SN Ia 0.035 UGC 02597 0.034684 –7 to –4 Known host redshift, consistent with SNID match 03:13:18.855 +17:59:27.88 SN Ia 0.035
TNS 2023zvf [ATLAS23xtf] 05:25:59.237 -44:18:30.34 Other Low signal to noise spectrum does not allow for classification. 05:25:59.237 -44:18:30.34

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