AstroNote 2021-148

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DRAFT
2021-05-08 15:32:18
Type: Object/s-Discovery/Classification
ZTF superluminous supernova candidates
Authors: Steve Schulze (OKC), Daniel A. Perley (LJMU), Lin Yan (Caltech), Ragnhild Lunnan, Ting-Wan Chen, Tuomas Kangas, Jesper Sollerman (OKC), Avishay Gal-Yam (WIS)
Source Group: ZTF
Abstract:
We report 7 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is >30 days and a typical peak r-band magnitude is 19-20 mag. We encourage spectroscopic classifications.

The Zwicky Transient Facility (ZTF; Bellm et al. 2019; Graham et al. 2019) Superluminous Supernova Science Program (e.g. Lunnan et al. 2020) reports 7 candidate SLSNe, following the methodology outlined by Perley et al. (in prep.)  We selected transients that have a long rise time (>20 days) and a faint host galaxy.

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 and special remarks.

We will distribute alerts on such SLSN candidates via AstroNotes periodically; 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.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2021kqi [ZTF21aavelfw]13:18:46.264-07:42:09.18rise time ~ 30 days, photo-z ~ 0.111 +- 0.029 (LS DR9), current brightness r~19.513:18:46.261-07:42:09.04
TNS2021iuj [ZTF21aaryclo]11:36:45.855-24:46:09.14the light curve evolves very gradually for 50 days, current brightness r~19.911:36:45.855-24:46:09.14
TNS2021lmv [ZTF21aavyozi]09:07:58.565-16:00:03.05rise time ~ 30 days, current brightness r~19.709:07:58.565-16:00:03.05
TNS2021mz [ZTF20acxmxtu]23:01:51.209+13:57:23.79rise time > 50 days, current brightness r~18.923:01:51.218+13:57:23.81SN IIn0.121
Other2021kfu [ZTF21aavgnyg]15:11:57.957+15:59:26.21rise time ~25 days, hostless to DESI LS limits; current brightness r~20.2
TNS2021lft17:12:05.969+40:20:42.86rise time ~33 days, photo-z ~ 0.097 +- 0.050 (LS DR9), current magnitude r~19.917:12:05.980+40:20:42.88SN IIn0.076
Other2021kat [ZTF21aavuqzr]19:50:31.638+57:59:28.05rise time ~25 days, redshift ~ 0.10, current magnitude r~18.7