The Immediate, Exemplary, and Fleeting echelle spectroscopy of SN 2023ixf: Monitoring acceleration of slow progenitor circumstellar material, driven by shock interaction

Danielle Dickinson, Dan Milisavljevic, Braden Garretson +12

We present high resolution WIYN/NEID echelle spectroscopy (R $\approx 70$,000) of the supernova (SN) 2023ixf in M101, obtained 1.51 to 18.51 days after explosion over nine epochs. D…