DRAFT
2024-12-09 16:40:58
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.362....1D
ePESSTO+ spectroscopic classification of optical transients
Authors: J. Duarte, R. Santos (Lisbon), A. Milligan, M. Ghendrih, G. Dimitriadis, L. Makrygianni, M. Smith (Lancaster), G. Pignata (UTA), M. Dennefeld (IAP), A. Kumar (Warwick), J. Sollerman (SU), S. Benetti (INAF), M. Gromadzki (Warsaw), P. Jonker (Radboud), E. Concepcion (Nova Gorica), J. Anderson (ESO), T.-W. Chen (NCU), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), P. Pessi (Stockholm), O. Yaron (Weizmann), D. Young (QUB), E. Zimmerman, A. Horowicz (Weizmann), 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 5 Type Ia's, 1 Type Ic-BL, 1 nuclear transient, 1 spectrum resembling a black-body and 1 reclassification of a Ibn SN. We encourage followup observations, especially of 2024adpq and 2024acyl.

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 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 Dec 08, 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), Superfit (Howell et al. 2005 2005ApJ...634.1190H) 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 2024acfr [ATLAS24qpt] 05:48:06.301 -74:39:11.59 SN Ia 0.09 +8 to +10 Redshift derived from template fitting using SNID. 05:48:06.301 -74:39:11.59 SN Ia 0.09
TNS 2024acti [ATLAS24qvm] 05:56:52.326 -70:06:07.25 SN Ia 0.07 –3 to +3 Redshift derived from template fitting using SNID. 05:56:52.326 -70:06:07.25 SN Ia 0.07
TNS 2024adkb [ATLAS24rae] 05:25:36.829 -31:32:48.63 SN Ia 0.09 –3 to +3 Redshift derived from template fitting using SNID. 05:25:36.829 -31:32:48.63 SN Ia 0.09
TNS 2024admq [ZTF24abwsujt] 10:27:49.189 -26:45:06.72 SN Ia 0.081 2MASX J10274956-2645116 0.080746 +4 to +7 Redshift from host galaxy available in NED. 10:27:49.189 -26:45:06.72 SN Ia 0.081
TNS 2024adpq [ATLAS24rge] 06:33:43.093 -34:10:57.98 NA/Unknown Spectrum is of a black body with no distinguishable emission lines. Transient is offset from resolved galaxy, suggesting SN origin. 06:33:43.093 -34:10:57.98
TNS 2024adml [ZTF24abwsaxu] 10:10:40.485 -02:26:05.03 SN Ic-BL 0.037 6dFGS gJ101040.9-022557 0.037309 –7 to –4 Redshift from host galaxy available in NED. 10:10:40.480 -02:26:05.14 SN Ic-BL 0.037
TNS 2024zxw [ZTF24abqdcod] 08:18:15.297 +16:24:08.80 Galaxy 0.093 0.093217 Redshift from host galaxy available in NED. Spectrum of nuclear transient is dominated by galaxy light. 08:18:15.297 +16:24:08.80 Galaxy 0.093
TNS 2024adrd [GOTO24ivs] 13:05:13.654 -43:45:44.70 SN Ia 0.031 +8 to +10 Redshift measured from galaxy emission features in spectrum. Classification matches that of report 18884. 13:05:13.670 -43:45:44.71 SN Ia 0.031
TNS 2024acyl [ATLAS24qxm] 02:46:05.338 +28:01:17.88 SN Ibn 0.027 The spectrum of this event has now developed P Cygni He I lines. 02:46:05.326 +28:01:17.91 SN Ibn 0.027

Comments