DRAFT
2024-12-30 16:28:56
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.394....1K
ePESSTO+ spectroscopic classification of optical transients
Authors: N. Koivisto, C. Vassallo, C. Humina, N. Pyykkinen, T. Kravtsov (UTU), M. Fulton (QUB), S. Faris (TAU), J. Terwel (TCD), J. Sollerman (Stockholm), A. Kumar (RHUL/Warwick), E. Zimmerman, 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, S. Srivastav, 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 one Type Ia SN and one young SN. SN2024afpg was discovered one day ago in the galaxy UGC 05825 with a non-detection three days earlier. The spectrum does not show any strong features. 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 December 29, 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).

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 2024aeuj [ZTF24abyzbkt] 08:09:05.233 +05:58:34.21 SN Ia 0.0713 2MASS J08090519+0558347 0.07133 at max Redshift from NED 08:09:05.228 +05:58:34.50 SN Ia 0.0713
TNS 2024afpg [ATLAS24rzf] 10:42:12.496 +23:44:51.60 SN 0.0116 UGC 05825 0.011606 Redshift from NED. The spectrum was taken less than 24h from discovery and it does not show any strong features. It broadly matches with SNe of type II and type Ic-BL. 10:42:12.470 +23:44:51.50 SN IIb 0.012

Comments