DRAFT
2024-04-08 14:52:33
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN..95....1D
ePESSTO+ spectroscopic classification of optical transients
Authors: Joyce van Dalen, Agnes van Hoof, Anastasia Shlentsova (Radboud), Morgan Fraser (UCD), Amit Kumar (Warwick), Aiswarya Sankar Kachiprath (NCU), Stan Barmentloo (Stockholm), Stefano Benetti (INAF-OAPd), Jesper Sollerman (Stockholm), 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 (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 two Type Ia SNe, one Type Ic-BL SN and one probable SN 2024fpj. The latter appears to lie in a cluster of galaxies; the spectrum displays several unidentified broad features (most notably at 5500 Ang) on a blue continuum. No narrow lines from the host could be identified, although we measure z=0.20 for a nearby galaxy that appears to lie in the same cluster. At this distance, 2024fpj has an absolute magnitude of -20.9.

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 April 08, using EFOSC2 and Grisms 11  (3380-7520, 13.8A resolution) and 13 (3985-9315A, 18A 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, Parkinson and Tucker, 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 2024fji [ATLAS24eta] 14:53:25.913 -24:18:01.63 SN Ic-BL 0.03 ATLAS 0 14:53:25.916 -24:18:01.77 SN Ic-BL 0.03
TNS 2024flg [ATLAS24evw] 15:59:32.608 -19:55:32.00 SN Ia 0.0472 ATLAS -4 15:59:32.594 -19:55:32.10 SN Ia 0.0472
TNS 2024fsf [ATLAS24eyu] 06:26:56.209 -63:06:20.20 SN Ia 0.0746 ATLAS -4 06:26:56.209 -63:06:20.20 SN Ia 0.0746
TNS 2024fpj [ATLAS24eww] 14:48:57.193 -07:27:14.68 SN ATLAS 14:48:57.193 -07:27:14.68 SN

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