The Zwicky Transient Facility (ZTF; Bellm et al. 2019; Graham et al. 2019) Superluminous Supernova Science Program (Lunnan et al. 2020; Yan et al. 2020; Chen et al. 2023a,b, Pessi et al. 2024) reports 5 candidate SLSNe, following the methodology outlined by Perley et al. (in prep.) We selected transients that have long rise time (>20 days) and/or faint host galaxies.
We summarise properties of the candidates in the Related Objects Table. These include coordinates, current magnitudes, approximate rise times, photometric redshifts of potential host galaxies (taken from the SDSS DR14) and special remarks.
Spectroscopic classifications and additional follow-up observations of these transients are encouraged.
This report is based on observations obtained with the Samuel Oschin Telescope 48-inch and the 60-inch Telescope at the Palomar Observatory as part of the Zwicky Transient Facility project. ZTF is supported by the National Science Foundation under Grant No. AST-2034437 and a collaboration including Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, Deutsches Elektronen-Synchrotron and Humboldt University, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, Trinity College Dublin, Lawrence Livermore National Laboratories, and IN2P3, France. Operations are conducted by COO, IPAC, and UW.
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 | 2024unu [ZTF24abcubhz] | 01:35:42.312 | +72:46:54.98 | Rising for ~60 days in ZTF data, currently r~19.3 mag with g-r ~0. Faint, red host in PS1. | 01:35:42.312 | +72:46:54.98 | ||||||
TNS | 2024sbm [ZTF24aaybwcs] | 16:13:34.030 | +28:34:08.06 | SDSS J161334.09+283407.7 | Rising for 85 days in ZTF data; currently r~19.5 mag. Host photo-z of 0.19 ± 0.03 (SDSS). Also reported as an "Ambiguous" candidate by NEEDLE (Astronote #2024-231). Field is setting. | 16:13:34.030 | +28:34:08.06 | |||||
TNS | 2024vpp [ZTF24abaixgz] | 00:25:19.080 | +50:07:26.75 | Rise time of ~50 days; now just past peak with r~19.9 mag. Hostless to the depth of PS1. | 00:25:19.080 | +50:07:26.75 | ||||||
TNS | 2024pyg [ZTF24aawxrue] | 14:41:38.928 | +06:15:12.77 | SDSS J144138.78+061510.8 | 80-day rise in ZTF data, currently r~18.2 mag. Host has SDSS photo-z 0.08 ± 0.04. Field is setting. | 14:41:38.928 | +06:15:12.77 | |||||
TNS | 2024syj [ZTF24abamahv] | 03:03:11.683 | +20:37:03.93 | 50-day rise in ZTF data, currently r~18.9 mag. A DBSP spectrum obtained 09/26/2024 shows potential host H-alpha at z=0.14, but a higher-quality spectrum is needed to confirm redshift and determine type. Correcting for (significant) Milky Way extinction, the implied absolute magnitude is M_r ~ -21.0 mag and M_g - M_r = 0.35 mag. | 03:03:11.683 | +20:37:03.93 |
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