DRAFT
2024-04-13 00:53:42
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.110....1H
Spectroscopic classification of young optical transients with LDSS-3
Authors: E. D. Hueichapan, R. Cartier, J. L. Prieto, T. Pessi (UDP)
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of two normal Type Ia's, one Type Ia-pec, and one Type II. SN 2024gei is an infant Type II, showing strong narrow Balmer emission lines, and SN 2024gep is a peculiar SN Ia showing shallow broad absorption lines.

We report 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 ALeRCE broker (Forster et al. 2020 2021AJ....161..242F) and by the ESA Gaia Photometric Science Alerts Team DPAC.

Observations were performed on the Clay Telescope at Las Campanas Observatory on the night of 2024 April 10, using LDSS-3 spectrograph providing a wavelength coverage of 3800-10,000 A. Classifications were performed using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) and GELATO (Harutyunyan et al. 2008 2008A&A...488..383H).

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2024fzh [ATLAS24fkw] 23:44:39.266 -72:41:51.85 SN Ia 0.071 Redshifted calculated from host galaxy narrow emission lines. 23:44:39.266 -72:41:51.85
TNS 2024gct [Gaia24bds] 21:57:50.280 -15:19:42.35 SN Ia 0.033 Redshifted calculated from host galaxy narrow emission lines. 21:57:50.280 -15:19:42.35
TNS 2024gei [ZTF24aaiutyh] 12:41:02.815 +25:16:06.33 SN II 0.059 SDSS J124102.77+251606.5 Spectrum dominated by strong narrow Balmer emission lines, could be a young type II showing flash ionization lines or a Type IIn. Current abs mag -17.5 mag. 12:41:02.815 +25:16:06.33
TNS 2024gep [ATLAS24foi] 14:28:35.521 -37:35:39.39 SN Ia-pec 0.012 Peculiar SN Ia, showing shallow absorption lines, similar to SN 2002es. We detect C II at an expansion velocity of ~8200 km/s and Si II at ~7800 km/s. 14:28:35.521 -37:35:39.39 SN Ia-pec 0.012
File Comments
compplot_24gep.pdf Comparison of SN 2024gep with other SNe.
gelato_sn2024gei.png SN 2024gei
gelato_sn2024gct.png SN 2024gct
gelato_sn2024fzh.png SN 2024fzh

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