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The Immediate, Exemplary, and Fleeting Echelle Spectroscopy of SN 2023ixf: Monitoring Acceleration of Slow Progenitor Circumstellar Material Driven by Shock Interaction

Astrophysical Journal
We present high-resolution WIYN/NEID echelle spectroscopy (R ≈ 70,000) of the supernova (SN) 2023ixf in M101, obtained 1.51 to 18.51 days after explosion over nine epochs.
D. Dickinson, D. Milisavljevic, B. Garretson, L. Dessart, R. Margutti, R. Chornock, B. Subrayan, D. J. Hillier, Eli Golub, Dan Li, Sarah E. Logsdon, J. Rajagopal, Susan Ridgway, Nathan Smith, Charles University, W. Lafayette, In, Usa, Integrative Data Science Institute, I. Paris, C. Universite, Paris, France, D. O. Astronomy, U. California, Berkeley, Ca, S. Observatory, U. Arizona, Tucson, Az, Department of Applied Physics, Astro-particle Physics, Astrophysics, C. Center, U. Pittsburgh, Pittsburgh, Pa, NSF's NOIRlab, Supra Solem Observatory, Bradley   +40 more
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