AstroNote 2021-159

We observed 10 SNe from the ZTF (Bellm et al. 2019, PASP, 131, 018002) alert stream with the 2.56-m Nordic Optical Telescope at Roque de los Muchachos Observatory, La Palma, Spain, between 10 and 14 May as part of an observational astronomy university course. The observations were carried out with the ALFOSC spectrograph, and we used grism #4 and a 1''-wide slit. The targets were primarily selected from the Bright Transient Survey (Fremling et al. 2020, 895, 32; Perley et al. 2021, ApJ, 904, 35).

The spectra were classified with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). The details about the classifications are given in the table below.

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.