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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), the ATLAS survey (Smith et al. 2020 2020arXiv200309052S), 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...3a..26S) and by the ALeRCE broker (Forster et al. 2020 https://arxiv.org/abs/2008.03303), and by the ESA Gaia Photometric Science Alerts Team DPAC.
Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2021 April 10, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) 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 | Source | Phase (days) | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TNS | 2021iso [ZTF21aatpsky] | 11:57:21.464 | -20:13:58.62 | SN | 0.031 | WISEA J115721.52-201404.1 | 0.031 | ZTF | < 6 | Redshift from narrow host galaxy emission lines. From the light curve, we estimate a phase of less than 6 days after explosion. The blue, featureless spectrum together with the photometric information from ZTF suggests this to be a young Type II supernova. However, further follow-up observations are needed for an unambiguous classification. | 11:57:21.460 | -20:13:58.56 | SN II | 0.031 |
TNS | 2021ipf [ZTF21aasuazz] | 11:37:50.589 | -07:13:42.08 | SN Ia | 0.054 | 6dF J1137507-071341 | ZTF | -7 to -4 | Phase and redshift from template matching with SNID. | 11:37:50.575 | -07:13:42.15 | SN Ia | 0.055735 | |
TNS | 2021ify [ZTF21aassamj] | 17:26:53.695 | +13:10:43.85 | SN Ia | 0.057 | ZTF, ATLAS | -7 to -4 | Phase and redshift from template matching with SNID. | 17:26:53.693 | +13:10:43.92 | SN Ia | 0.056 | ||
TNS | 2021hiv [ZTF21aaquhqr] | 12:49:05.837 | -12:12:27.57 | SN II | 0.023 | LCRS B124628.6-115605 | 0.023 | ZTF, Pan-STARRS | +11 to +20 | Redshift from narrow host galaxy emission lines. From the ZTF light curve, we estimate the epoch to be about 2.5 weeks after the explosion. | 12:49:05.843 | -12:12:27.61 | SN II | 0.023 |
TNS | 2021ill [ATLAS21krq] | 09:19:45.340 | -30:52:40.76 | SN Ia | 0.056 | 2MFGC 07241 | 0.056 | ATLAS, Gaia | -7 to -4 | Redshift from narrow host galaxy emission lines. | 09:19:45.340 | -30:52:40.76 | SN Ia | 0.056 |
TNS | 2021ijh [Gaia21brl] | 12:13:59.390 | -51:48:38.81 | SN II | 0.037 | WISEA J121359.98-514836.1 | 0.037 | Gaia | +8 to +10 | Redshift from narrow host galaxy emission lines. | 12:13:59.390 | -51:48:38.81 | SN II | 0.037 |
TNS | 2021gvv [ZTF21aaqmoof] | 17:04:36.004 | +14:04:49.47 | SN II | 0.038 | SDSS J170435.94+140449.3 | 0.038 | ZTF, ATLAS | > +20 | Redshift from narrow host galaxy emission lines. From the ZTF light curve, we estimate the epoch to be 20-25 days after explosion. | 17:04:35.997 | +14:04:49.37 | SN II | 0.038 |
Comments