DRAFT
2023-10-04 16:20:48
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.260....1A
ePESSTO+ spectroscopic classification of optical transients
Authors: B. Ayala, M. Ramirez, R. Dastidar (UNAB), A. Reguitti (INAF-OAB), S. Benetti (INAF-OAPd), S. Barmentloo (OKC), X. Sheng (QUB), 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), P. Wiseman (Southampton), R. Lunnan (Stockholm), 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 II SNe, 1 blue continuum possibly a SN Ib, 1 SN Ia 91T-like, 1 SN Ib/c, 3 normal SNe Ia, 1 blue continuum, 1 SN IIb and a nuclear flare at z=0.61.

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 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) and by the ALeRCE broker (Forster et al. 2020 https://arxiv.org/abs/2008.03303), and 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 October 03, using EFOSC2, Grism 13 (3700-9250 A, 27 A resolution) and Grism 11 (3400-7450 A, 21 A resolution). Classifications were done using GELATO (Harutyunyan et al. 2008 2008A&A...488..383H) and 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 2023rkg [ZTF23aawzdxd] 21:49:34.360 -22:07:18.26 SN Ib 0.007 APMUKS(BJ)B214645.68-222120.0 SNID fit -15 Blue continuum, redshift from SNID best fit with SN 2008D 21:49:34.360 -22:07:18.26 SN Ib 0.007
TNS 2023swf [ZTF23aberpzw] 21:05:58.525 -14:50:30.30 SN II 0.024 WISEA J210557.10-145023.6 0.0232 Host galaxy 21:05:58.530 -14:50:30.34 SN II 0.024
TNS 2023sym [ZTF23abffvrm] 17:57:32.730 +13:26:09.53 SN Ia-91T-like 0.044 SNID fit Redshift from SNID best fit with SN 1991T 17:57:32.730 +13:26:09.53 SN Ia-91T-like 0.044
TNS 2023tfk [ATLAS23suu] 22:31:00.317 -55:33:04.28 SN Ic 0.11 2MASXJ22310040-5533041 SNID fit Reddened, redshift from SNID best fit with SN 2004aw 22:31:00.317 -55:33:04.28 SN Ic 0.11
TNS 2023tng [ZTF23abgfxqn] 22:25:31.984 +10:40:18.47 SN Ia 0.043 SDSS J222531.87+104011.9 SNID fit -3 Redshift from SNID best fit with SN 2003du 22:25:31.984 +10:40:18.47 SN Ia 0.043
TNS 2023tnh [ZTF23abgfwhj] 20:51:34.867 -03:29:12.25 SN Ia 0.056 SDSS J205134.91-032913.0 Narrow host lines Emission lines from the host galaxy. Once removed the spectrum is probably that of a SN Ia 20:51:34.867 -03:29:12.25 SN Ia 0.056
TNS 2023tsq [ZTF23abfubfc] 23:12:24.189 +17:42:41.52 SN Ia 0.082 SDSS J231224.20+174241.3 SNID fit Redshift from SNID best fit with SN 1990O 23:12:24.189 +17:42:41.52 SN Ia 0.082
TNS 2023tts [ATLAS23tho] 08:29:21.964 +11:45:27.86 SN II 0.095 SDSS J082922.12+114529.2 SN emission lines 08:29:21.932 +11:45:27.96 SN II 0.095
TNS 2023tvj [ATLAS23tje] 06:08:57.142 -21:31:19.85 SN 0.04 Narrow host lines Blue continuum with narrow lines from host galaxy 06:08:57.120 -21:31:20.06 SN II 0.04
TNS 2023tvp [ATLAS23tjm] 20:11:25.334 -38:11:59.96 SN IIb 0.019 ESO339-G036 0.01885 Host galaxy 20:11:25.330 -38:12:00.18 SN IIb 0.019
Other 23:59:13.900 -17:41:47.60 AGN 0.61 Emission lines Hbeta and Mg II 2798 at z=0.61

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