DRAFT
2023-12-20 14:02:59
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.352....1S
ePESSTO+ spectroscopic classification of optical transients
Authors: T. Schweyer (OKC/SU), S. Barmentloo (OKC/SU), P. Pessi (OKC/SU), J. Sollerman (OKC/SU), M. Fulton (QUB), A. Gkini (OKC/SU), S. Yang (HNAS), E. Zimmerman (Weizmann), O. Yaron (Weizmann), S. Benetti (INAF OAPd), J. Anderson (ESO), T. Müller Bravo (Southampton), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (QUB), 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. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), C. Stubbs (Harvard), K. C. Chambers, M. Huber, A. Schultz, T. de Boer, J. Bulger, J. Fairlamb, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, R. J. Wainscoat, H. Gao (IfA, Hawaii)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This reports includes the classification of 7 Type Ia supernovae, 3 Type II supernovae, one Type Ic supernova 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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), the ATLAS survey (Smith et al. 2020 2020PASP..132h5002S), 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 2023-12-19, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) or Grism 11 (3380-7520, 16A 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 2023zoh [ATLAS23xcl] 05:57:26.915 -39:31:10.59 SN II 0.0465 0.046452 pre-max Redshift from host galaxy. 05:57:26.940 -39:31:10.38 SN II 0.0465
TNS 2023yqp [PS23lsu] 03:24:49.810 -09:14:12.59 SN Ic 0.032 0.032 max Redshift from host galaxy. 03:24:49.810 -09:14:12.59 SN Ic 0.032
TNS 2023aajn [ATLAS23xsk] 03:41:33.865 -02:46:50.02 SN Ia-91T-like 0.049 pre-max 03:41:33.860 -02:46:50.12 SN Ia-91T-like 0.049
TNS 2023znl [ZTF23absvnkc] 06:55:03.005 +19:16:00.84 SN Ia 0.063 pre-max Redshift from SNID template matching. 06:55:03.005 +19:16:00.84 SN Ia 0.063
TNS 2023aaib [ATLAS23xsg] 07:05:05.597 -53:59:09.18 SN Ia 0.053 0.05426 pre-max Redshift from host galaxy. 07:05:05.550 -53:59:08.99 SN Ia 0.053
TNS 2023aamf [ATLAS23xse] 11:01:58.696 -46:54:20.58 SN Ia 0.05 pre-max Redshift from SNID template matching. 11:01:58.696 -46:54:20.58 SN Ia 0.05
TNS 2023zmx [ZTF23absdhyl] 09:09:17.440 +17:43:58.98 SN Ia 0.116 SDSS J090917.62+174359.2 max Redshift from SNID template matching. Roughly matches galaxy photo-z of 0.144. 09:09:17.439 +17:43:58.91 SN Ia 0.116
TNS 2023zoa [ATLAS23xbq] 06:32:55.243 -42:35:24.19 SN Ia 0.091 0.091 pre-max Redshift from host galaxy. 06:32:55.243 -42:35:24.19 SN Ia 0.091
TNS 2023ytq [ATLAS23wnr] 05:44:21.651 -55:09:48.66 SN II 0.028 max Redshift from SNID template matching. LC could be in plateau phase (SN IIP). 05:44:21.651 -55:09:48.66 SN II 0.028
TNS 2023aamc [ATLAS23xrw] 05:39:36.747 -40:57:20.19 SN Ia 0.061 pre-max Redshift from SNID template matching. 05:39:36.740 -40:57:20.12 SN Ia 0.061
TNS 2023ztl [ATLAS23xgz] 06:37:41.807 -51:45:48.25 CV Spectrum mostly blue and featureless. Classification based on weak detection of Hydrogen Balmer lines. 06:37:41.810 -51:45:48.13 CV
TNS 2023aanu [ATLAS23xtb] 03:39:47.985 -58:58:11.77 SN II 0.045 Spectrum is mostly blue and featureless, with an emission line at 4700 Å. It matches with the very early spectra of Type II SN 2020jfo if redshift z = 0.045. 03:39:47.970 -58:58:11.64 SN II 0.045
TNS 2023aaig [ATLAS23xnt] 12:04:57.853 -30:43:46.96 Other Low signal-to-noise spectrum blue and featureless. No known host redshift. Tentative detection of Halpha at z = 0.06, but not conclusive. 12:04:57.820 -30:43:47.32

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