AstroNote 2024-91

We report the observation of 7 transients using the Kast Double Spectrograph on the 3.05 meter C. Donald Shane telescope at the Lick observatory. Observations were obtained between MJD 60403.14 and MJD 60403.53

On the red side detector the 300/7500 grating was used, which has a dispersion of 2.55 Å/pixel. On the blue side the 600/4310 grism was used, which has a dispersion of 1.02 Å/pixel. A slit width of 1.5" was used for all observations. Spectra were reduced using the UCSC Spectral Pipeline (Siebert et al. 2019). A spectral range of approximately 3590-10490 Å was obtained for the reduced spectra.

Of these 7 transients classifications were found for 6 events, which includes 1 SN Iax (02cx-like), 1 SN 1a 91T-like and 4 SN Ia. Classifications were performed either by eye for obvious cases, or by fitting observations to template spectra from previously classified transients using Next Generation Superfit (NGSF, Goldwasser et al. 2022).

Details of each observed transient are summarised in the "Related Objects" table. Further follow-up observations are encouraged of the target for which we did not obtain a concrete classification. The spectrum of this unclassifed object has been included in this Astronote.