DRAFT
2024-12-01 16:12:04
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.352....1A
ePESSTO+ spectroscopic classification of optical transients
Authors: A. Aryan, A. Sankar.K, T.-W. Chen (NCU), A. Townsend (HU-Berlin), C. Gutiérrez (IEEC/ICE-CSIC), S. Faris (TAU), T. Petrushevska (UNG), T. Killestein (UTU), J. Sollerman (OKC), J. Anderson (ESO), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), Priscila J. Pessi (OKC), O. Yaron (Weizmann), D. R. 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, 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 and 1 Type II. Additionally, we correct the classification of SN2024acac as Type Ia. 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  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 Nov 30, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520A, 16A resolution). Classifications were done using GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H) and  DASH (Muthukrishna et al. 2019  2019ApJ...885...85M)..

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 2024absc [ATLAS24qkf] 23:47:35.605 -38:04:05.17 SN II 0.044 LCRS B234457.9-382036 0.044294 Low contrast Balmer P-cygni profiles, with signs of He I so might possibly turn into a IIb, but unclear yet. Redshift measurement of SN is from host galaxy H-alpha, [OII] and [OIII] emission lines. Our measured redshift is consistent with the host galaxy redshift. 23:47:35.605 -38:04:05.17 SN II 0.044
TNS 2024acbz [ZTF24abtvopb] 00:50:11.996 +23:47:16.42 SN Ia 0.053 LEDA 1693735 +2 Redshift from host galaxy available in SIMBAD. Redshift also confirmed by DASH and NGSF. Phase from NGSF. 00:50:11.996 +23:47:16.42 SN Ia 0.053
TNS 2024abvc [ATLAS24qlk] 03:10:52.849 -45:30:52.25 SN Ia 0.09 WISEA J031053.13-453052.4 Pre max Redshift from DASH, confirmed by GELATO and NGSF. 03:10:52.849 -45:30:52.25 SN Ia 0.09
TNS 2024abof [ATLAS24qhl] 04:03:21.576 -35:01:35.95 SN Ia 0.06 Around max Host is a DESI Legacy survey galaxy with object id: 9718. Redshift from DASH, confirmed by GELATO and NGSF. 04:03:21.600 -35:01:36.16 SN Ia 0.06
TNS 2024abnz [GOTO24igz] 03:17:08.198 -63:24:49.96 SN Ia 0.09 Post max Orphan. Redshift from DASH, confirmed by GELATO and NGSF. 03:17:08.198 -63:24:49.96 SN Ia 0.09
TNS 2024acnq [ATLAS24qry] 10:22:59.770 +20:39:42.81 SN Ia 0.13 SDSS J102259.31+203947.1 -1 Redshift from DASH, confirmed by GELATO and NGSF. Phase from GELATO. 10:22:59.753 +20:39:43.08 SN Ia 0.13
TNS 2024acac [GOTO24ikv] 05:36:31.100 -42:18:29.75 SN Ia 0.06 LEDA 3081025 -3 Previously misclassified as CV in AstroNote #2024-351. Redshift from DASH, confirmed by GELATO and NGSF. Phase from GELATO. 05:36:31.100 -42:18:29.75 SN Ia 0.06
AstroNote Publication Timestamp Title Authors
2024-351 2024-11-30 14:27:52 ePESSTO+ spectroscopic classification of optical transients A. Townsend (HU-Berlin), C. Gutiérrez (IEEC/ICE-CSIC), A. Aryan, A. Sankar.K, T.-W. Chen (NCU), S. Faris (TAU), T. Petrushevska (UNG), T. Killestein (UTU), J. Anderson (ESO), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), Priscila J. Pessi (OKC), T. Müller Bravo (Trinity), O. Yaron (Weizmann), D. R. Young (QUB), E. Zimmerman, A. Horowicz (Weizmann), J. Sollerman (OKC), 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)

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