DRAFT
2024-07-13 16:49:09
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.194....1D
ePESSTO+ spectroscopic classification of optical transients
Authors: J. Duarte, S. González-Gaitán (CENTRA-IST), C. Gutiérrez (IEEC/ICE-CSIC), M. Dennefeld (IAP), A. Kumar (Warwick), P. Pessi (Stockholm), E. Zimmerman (Weizmann), 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, R. Bruch (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, 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 12 Type Ia's (10 normal, 1 Ia-91T, and 1 Ia-CSM), 2 Type II's, 2 Type Ibn's, 1 SN and 1 Nova.

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), 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...3...26S) and by the ALeRCE broker (Forster et al. 2020 2021AJ....161..242F), the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD) and by BlackGEM (Groot et al. 2024, arXiv:2405.18923).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 July 12, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H) and NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H).

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 2024iub [ZTF24aanppvy] 15:33:01.189 -06:33:05.49 SN II 0.027 WISEA J153301.08-063305.5 > +20 Redshift from the galaxy narrow emission lines. 15:33:01.189 -06:33:05.49 SN II 0.027
TNS 2024knu [ZTF24aaotlsk] 15:18:04.642 +14:23:38.61 SN Ia-CSM 0.15 > +20 Redshift from the galaxy narrow emission lines. 15:18:04.648 +14:23:38.54 SN Ia-CSM 0.15
TNS 2024lxq [ZTF24aasfxgh] 15:28:12.124 -27:28:29.21 SN Ia 0.08 WISEA J152812.15-272829.0 +11 to +20 Redshift from the galaxy narrow emission lines. 15:28:12.124 -27:28:29.21 SN Ia 0.08
TNS 2024msu [ATLAS24jpj] 21:24:24.274 -80:59:04.04 SN Ia 0.06 +11 to +20 Redshift from spectral matching. 21:24:24.274 -80:59:04.04 SN Ia 0.06
TNS 2024ncd [ZTF24aatchko] 17:02:56.209 +29:33:12.08 SN SDSS J170256.23+293312.3 17:02:56.209 +29:33:12.08 SN
TNS 2024nos [GOTO24dhk] 12:51:47.022 -38:22:51.89 SN Ia 0.08 +4 to +7 Redshift from spectral matching. 12:51:47.022 -38:22:51.89 SN Ia 0.08
TNS 2024num [ATLAS24klq] 14:12:42.703 +28:46:49.02 SN Ia-91T-like 0.06 SDSS J141242.73+284647.3 -7 to -4 Redshift from spectral matching. 14:12:42.710 +28:46:48.47 SN Ia-91T-like 0.06
TNS 2024nzf [ZTF24aauerna] 16:39:53.018 +29:47:14.11 SN Ia 0.12 SDSS J163952.93+294714.6 -7 to -4 Redshift from spectral matching. 16:39:53.018 +29:47:14.11 SN Ia 0.12
TNS 2024nzg [ZTF24aaumgko] 15:56:22.839 +21:35:13.28 SN Ia 0.1 SDSS J155622.80+213512.3 -7 to -4 Redshift from spectral matching. 15:56:22.839 +21:35:13.28 SN Ia 0.1
TNS 2024nzk [GOTO24djx] 01:29:03.993 -10:32:36.00 SN Ia 0.12 SDSS J012904.00-103237.2 +4 to +7 Redshift from spectral matching. 01:29:03.958 -10:32:35.96 SN Ia 0.12
TNS 2024pbb [ATLAS24kuk] 22:42:42.127 -16:44:57.42 SN Ia 0.07 2MASSJ22424227-1644574 -7 to -4 Redshift from spectral matching. 22:42:42.120 -16:44:57.73 SN Ia 0.07
TNS 2024pco [GOTO24dkw] 01:57:55.737 +13:21:38.36 SN Ibn 0.0443 2MASX J01575584+1321295 0.044325 Around peak Redshift from the host galaxy. 01:57:55.700 +13:21:38.92 SN Ib-pec 0.0443
TNS 2024pgk [ZTF24aavapoe] 20:34:40.358 -04:20:40.89 SN Ia 0.09 SDSS J203439.8-042034.7 Around peak Redshift from spectral matching. 20:34:40.358 -04:20:40.89 SN Ia 0.09
TNS 2024pgs [ZTF24aaupcqg] 21:41:24.785 -05:15:22.76 SN Ia 0.11 SDSS J214124.70-051523.8 -7 to -4 Redshift from spectral matching. 21:41:24.785 -05:15:22.76 SN Ia 0.11
TNS 2024phr [ZTF24aavhvho] 21:03:36.874 +11:50:18.96 SN II 0.097 WISEA J210337.12+115018.7 Redshift from the galaxy narrow emission lines. 21:03:36.874 +11:50:18.96 SN II 0.097
TNS 2024pid [BGEM J004734.42-251926.3] 00:47:34.420 -25:19:26.35 Nova 0.0008 NGC 0253 0.0008 Redshift from the host galaxy (NGC 253). The current absolute magnitude of the transient is around -8 mag. 00:47:34.420 -25:19:26.35 Nova 0.0008
TNS 2024pii [ZTF24aauuybw] 20:59:06.144 -03:13:48.02 SN Ia 0.1 SDSS J205906.12-031348.4 +4 to +7 Redshift from spectral matching. 20:59:06.144 -03:13:48.02 SN Ia 0.1
TNS 2023zkd [ZTF23aasnwva] 15:48:47.536 +09:12:00.28 SN Ibn 0.056 SDSS J154847.49+091200.8 Redshift from SN emission lines. Long lived light curve. The spectrum shows prominent Balmer lines. 15:48:47.546 +09:12:00.14 SN Ibn 0.056

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