DRAFT
2024-11-29 13:24:04
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.349....1G
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Gutiérrez (IEEC/ICE-CSIC), A. Townsend (HU-Berlin), A. Aryan, A. Sankar K, H.-Y. Huang, 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)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 1 Type Ia, and 1 CV. 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 Nov 28, using EFOSC2 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 2024acei [ATLAS24qop] 01:32:47.261 -40:26:12.24 SN Ia 0.08 -1 Redshift from DASH, confirmed by GELATO and NGSF. Phase from GELATO. There is no background source at the position of the transient. However, it is located approximately +5".5 east and -11".2 south of a nearby galaxy in the DESI LS image. Assuming this galaxy is the host, the projected distance to the transient is about ~18 kpc. 01:32:47.261 -40:26:12.24 SN Ia 0.08
TNS 2024aceb [ATLAS24qoe] 07:19:58.111 -53:41:26.22 CV Blue continuum. Balmer H-alpha, H-beta, H-gamma at z ~ 0. 07:19:58.111 -53:41:26.22 CV

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