AstroNote 2023-27

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DRAFT
2023-02-09 14:56:34
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: K. Phan, C. Jiménez-Palau, T. Müller-Bravo (ICE), T. Nagao (Turku), E. Paraskeva (NOA), P. Pessi (ESO), S. Benetti (INAF-OAPd), L. Galbany (ICE), J. Anderson (ESO), T.-W. Chen (TUM/MPA), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (Birmingham), 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, D. R. Young, M. Fulton, M. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), T.-W. Chen (TUM/MPA), M. Nicholl (Birmingham), C. Stubbs (Harvard)
Source Group: ePESSTO+
Abstract:
This report includes classifications of three Type Ia's, one Type IIb and one Type IIn.

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 Zwicky Transient Facility ZTF (Bellm et al. 2019 2019PASP..131a8002B) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3a..26S).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 February 08, 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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2023bec [ATLAS23bps]12:06:28.962-28:34:55.16SN IIb0.03ATLAS12:06:29.000-28:34:55.06SN IIb0.03
TNS2023beg [ATLAS23bqk]15:08:25.840-40:04:25.75SN Ia0.05ATLASat max15:08:25.840-40:04:25.75SN Ia0.05
TNS2023bgb [ATLAS23bqz]13:11:57.360-58:32:16.00SN Ia0.025ATLAS(-10, -8)13:11:57.360-58:32:16.00SN Ia0.025
TNS2023bgj [ATLAS23brd]06:25:48.055-37:46:27.31SN IIn0.055ATLASpossible HeII / NIII emission lines at 460006:25:48.060-37:46:27.44SN IIn0.055
TNS2023bif [ZTF23aabqrda]16:30:49.119+03:12:20.59SN Ia0.06ZTF(8, 10)possible host galaxy is LEDA 1247360, but the redshift does not match (z=0.03657)16:30:49.119+03:12:20.59SN Ia0.06