DRAFT
2024-12-27 16:34:49
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.389....1V
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Vassallo, N. Koivisto, C. Humina, N. Pyykkinen, T. Kravtsov (UTU), S. Faris (TAU), J. Terwel (TCD), M. Fulton, S. Srivastav (QUB), E. Zimmerman (WIS), A. Horowicz (Weizmann), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), P. Pessi (Stockholm), 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, 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), X. Sheng, A. Aamer, C. R. Angus, D. Magill (QUB), P. Ramsden (QUB/Birmingham)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 5 Type Ia's, 1 Type II, 1 Type IIn, 1 featureless blue continuum and 1 CV. SN2024acyk is a bright one month old type IIn, showing strong narrow H emission lines and some He emission lines, and the light curve seems to still be rising. SN2024aevp is a young type Ia, discovered three days ago. We encourage followup observations.

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), and by the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 December 26, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520A, 16A 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
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 2024aepq [ATLAS24rqe] 22:46:17.454 -25:43:38.05 SN Ia 0.092 at max Redshift from SNID 22:46:17.454 -25:43:38.05 SN Ia 0.092
TNS 2024aeou [GOTO24jgh] 23:56:49.411 -34:42:42.26 SN Ia 0.048 at max Redshift from SNID 23:56:49.411 -34:42:42.26 SN Ia 0.048
TNS 2024acyk [ATLAS24qxl] 04:22:54.040 -40:37:47.02 SN IIn 0.128 Redshift from narrow H emission lines visible in spectrum. 04:22:54.040 -40:37:47.02 SN IIn 0.128
TNS 2024aeyv [ATLAS24rvb] 07:47:54.952 -48:09:04.33 SN Ia 0.052 at max Redshift from SNID 07:47:54.952 -48:09:04.33 SN Ia 0.052
TNS 2024aeyw [ATLAS24rvd] 08:02:03.118 -46:58:06.66 CV 08:02:03.118 -46:58:06.66 CV
TNS 2024adtg [ZTF24abvftmi] 08:53:28.451 -11:08:26.89 Other 08:53:28.451 -11:08:26.89 SLSN-II 0.32
TNS 2024aews [ATLAS24rtw] 11:45:27.815 -50:35:41.40 SN II 0.014 +11 to +20 Redshift from SNID 11:45:27.815 -50:35:41.40 SN II 0.014
TNS 2024aevp [ZTF24abzlfhf] 11:57:30.044 -14:38:19.22 SN Ia 0.017 < -10 Redshift from host galaxy emission 11:57:30.044 -14:38:19.22 SN Ia 0.017
TNS 2024aevz [ATLAS24rtj] 09:43:44.566 -02:41:21.16 SN Ia 0.096 -7 to -5 09:43:44.566 -02:41:21.16 SN Ia 0.096

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