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), and the Gravitational-wave Optical Transient Observer GOTO (Steeghs et al. 2022 2022MNRAS.511.2405S).
Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2024 June 28, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and 11 (3380-7520, 13.8A resolution). Classifications were done using GELATO (Harutyunyan et al. 2008 2008A&A...488..383H).
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.
| 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 | 2024mml [ATLAS24jmx] | 13:33:17.964 | -40:29:46.48 | SN Ic | 0.012 | ESO324-G035 | 0.011812 | ATLAS | -3 to 3 | GELATO finds reasonable matches with SN 1994I at epochs around maximum light. The host galaxy redshift is adopted from NED. | 13:33:17.964 | -40:29:46.48 | SN Ic | 0.012 |
| TNS | 2024kwg [ATLAS24itf] | 21:55:43.136 | -66:40:00.07 | SN II | 0.085 | ATLAS | > +20 | Host redshift is estimated based on the narrow H-alpha emission line. The spectrum shows a broad H-alpha emission feature close to the narrow line. The phase is estimated based on the ATLAS forced photometry light curve. | 21:55:43.136 | -66:40:00.07 | SN II | 0.085 | ||
| TNS | 2024ixo [GOTO24brl] | 21:52:30.690 | +02:14:01.18 | SN | SDSS J215230.81+021401.3 | GOTO | > +20 | The low-SNR spectrum is red without any discernible features. The transient is closely associated with a faint host galaxy (photo-z = 0.2) but offset from its center, making it a likely supernova. The transient is at least 40 days old based on the ZTF light curve. | 21:52:30.690 | +02:14:01.18 | SLSN-II | 0.22 | ||
| TNS | 2024kcq [ZTF24aapzgnb] | 21:38:44.516 | +11:59:42.17 | SN Ia | 0.11 | ZTF, GOTO | +11 to +20 | The spectrum is that of an SN Ia around two weeks after maximum light. GELATO finds good matches, for example, with SN 1998bu. The redshift is from spectral matching with GELATO. The supernova does not have a visible host galaxy. | 21:38:44.516 | +11:59:42.17 | SN Ia | 0.11 | ||
| TNS | 2024jkx [ATLAS24hue] | 22:35:00.840 | -38:26:05.89 | SN Ia | 0.059 | ESO345-G031 | 0.059 | ATLAS, GOTO | > +20 | The spectrum is that of an SN Ia a few weeks after maximum light. GELATO finds a good match, for example, with SN 2005am. The host galaxy redshift is adopted from NED. | 22:35:00.817 | -38:26:05.99 | SN Ia | 0.059 |
| TNS | 2024mze [ATLAS24jvo] | 22:39:45.633 | -66:44:01.53 | SN Ia | 0.042 | ESO 109-IG 010 NED01 | 0.042 | ATLAS, GOTO | –3 to +3 | The spectrum is that of an SN Ia around maximum light. GELATO finds a good match, for example, with SN 1996X. The host galaxy redshift is adopted from NED. | 22:39:45.690 | -66:44:01.64 | SN Ia | 0.042 |
| TNS | 2024mpz [GOTO24cxp] | 03:21:40.448 | -06:38:02.33 | SN Ia | 0.035 | WISEA J032139.93-063808.0 | 0.035 | GOTO | –3 to +3 | The spectrum is that of an SN Ia around maximum light. GELATO finds a good match, for example, with SN 2001ep. The host galaxy redshift is adopted from NED. | 03:21:40.466 | -06:38:01.91 | SN Ia | 0.035 |
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