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), the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD) and by the BlackGEM telescope array (Groot et al. 2024 2024PASP..136k5003G ).
Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2025 May 24, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520A, 16A resolution). Classifications were done using NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H) and DASH (Muthukrishna et al. 2019 2019ApJ...885...85M), and 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 | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2025jyw [ATLAS25euq] | 13:05:51.440 | +10:13:59.80 | SN Ia | 0.045 | 2MASX J13055135+1013599 | 0.045 | Redshift from host at NED. Good match with normal Type Ia using NGSF and DASH. | 13:05:51.440 | +10:13:59.80 | SN Ia | 0.045 |
| TNS | 2025ljm [ZTF20aczgxij] | 14:13:19.614 | -10:24:47.46 | SN Ia-SC | 0.048 | WISEA J141319.63-102447.6 | 0.048 | Redshift from host at NED. Good match with Super-Chandra type Ia using NGSF. The SN seems young, detected six days ago, still rising, may brighten up more. Currently, M_g = -18.83. | 14:13:19.614 | -10:24:47.46 | SN Ia-SC | 0.048 |
| TNS | 2025kdt [ZTF25aapqvqk] | 14:25:13.003 | -07:08:45.19 | SN Ia | 0.058 | WISEA J142512.98-070838.3 | 0.058 | Redshift from host at DESI Legacy Survey (DR1). Good match with normal Type Ia using NGSF and DASH. | 14:25:13.003 | -07:08:45.19 | SN Ia | 0.058 |
| TNS | 2025kef [ZTF25aaprgoz] | 14:48:01.789 | +11:03:37.21 | SN Ia | 0.08 | WISEA J144801.80+110336.8 | Redshift from the template match. Good match with normal Type Ia using NGSF and DASH. The SN locates closely to the host nuclear. | 14:48:01.789 | +11:03:37.21 | SN Ia | 0.08 | |
| TNS | 2025kfh [ZTF25aaptoxz] | 16:39:32.352 | +15:59:15.81 | CV | Typical hot/blue continue. Characteristic Balmer series is seen in spectrum. | 16:39:32.352 | +15:59:15.81 | CV | ||||
| TNS | 2025lmc [ATLAS25fhl] | 14:58:38.415 | +05:07:37.88 | SN Ia-91T-like | 0.08 | SDSS J145838.40+050737.8 | Redshift from the template match. Good match with Ia-91T-like and Ia-99aa-like using NGSF, DASH and GELATO. Very bright (M_c ~ -19.7), still rising. | 14:58:38.415 | +05:07:37.88 | SN Ia-91T-like | 0.08 | |
| TNS | 2025lic [ZTF25aaremst] | 15:26:38.599 | +06:06:26.62 | SN | 0.042 | SDSS J152638.44+060631.1 | 0.04191274 | The redshift is from the host. The transient spectrum shows blue and featureless. The transient is currently with M_c ~ -17.94 mag. | 15:26:38.599 | +06:06:26.62 | SN | 0.042 |
| TNS | 2025kxt [ZTF25aaqyaob] | 17:29:39.480 | -11:03:13.91 | CV | The transient spectrum shows blue and featureless but with weak Balmer absorptions at redshift = 0, so likely a CV. High Milky Way extinction (A_r ~ 1.2 mag). | 17:29:39.480 | -11:03:13.91 | CV | ||||
| TNS | 2025ktt [ZTF25aaqkhyr] | 18:08:46.781 | +23:10:14.19 | SN Ia | 0.08 | WISEA J180846.75+231014.4 | Redshift from the template match. The match with normal Type Ia using NGSF and DASH. The SN is located close to the host nucleus. | 18:08:46.781 | +23:10:14.19 | SN Ia | 0.08 | |
| TNS | 2025kyq [ATLAS25fdz] | 18:15:15.415 | -69:03:25.30 | CV | Typical hot/blue continue. Characteristic Balmer series is seen in spectrum. | 18:15:15.415 | -69:03:25.30 | CV | ||||
| TNS | 2025kxm [BGEM J201629.65-444221.1] | 20:16:29.651 | -44:42:21.19 | SN II | 0.019 | ESO 284- G 043 | 0.019 | Redshift from host at NED. Good match with Type II SN using NGSF. | 20:16:29.651 | -44:42:21.19 | SN II | 0.019 |
| TNS | 2025lmg [ATLAS25fhp] | 21:30:41.773 | -10:37:53.81 | SN Ia-91T-like | 0.114 | WISEA J213041.79-103755.6 | 0.114 | Redshift from host at NED. The good match with SN Ia-91T-like using NGSF, DASH and GELATO. The SN is very bright with M_c ~ -20.0 mag. | 21:30:41.773 | -10:37:53.81 | SN Ia-91T-like | 0.114 |
| TNS | 2025kzh [GOTO25cvz] | 20:42:23.182 | +13:44:12.94 | SN II | 0.01 | 2MFGC 15692 | Redshift from the template match. The good match with SN II using NGSF. | 20:42:23.182 | +13:44:12.94 | SN II | 0.01 | |
| TNS | 2025ijo [ATLAS25efl] | 21:58:16.036 | -68:10:48.87 | SN II | 0.04 | WISEA J215816.35-681045.9 | Redshift from the template match. The good match with SN II using NGSF. | 21:58:16.036 | -68:10:48.87 | SN II | 0.04 | |
| TNS | 2025imt [ATLAS25ehy] | 22:09:39.076 | -55:21:38.16 | SN Ia-91T-like | 0.05 | WISEA J220938.96-552138.3 | Redshift from the template match. The good match with Ia-91T-like using DASH. The SN has a peak M_c = -19.4 mag. | 22:09:39.076 | -55:21:38.16 | SN Ia-91T-like | 0.05 | |
| TNS | 2025kdy [ATLAS25ewc] | 22:40:28.305 | -12:58:19.36 | SN Ia-91T-like | 0.06 | WISEA J224028.29-125820.8 | Redshift from the template match. Good match with SN Ia-91T-like using NGSF and DASH. The SN is located close to the host nucleus. The SN has M_c = -19.4 mag. | 22:40:28.305 | -12:58:19.36 | SN Ia-91T-like | 0.06 | |
| TNS | 2025kjo [ATLAS25eyd] | 00:05:13.130 | -11:30:23.93 | SN Ia | 0.022 | IC 1529 | 0.022 | Redshift from the host at NED. Good match with normal SN Ia using NGSF and DASH. The object has recently emerged from solar conjunction, and its spectrum matches that of an old Type Ia. | 00:05:13.130 | -11:30:23.93 | SN Ia | 0.022 |
Comments