Spectroscopic observations of progenitor activity 100 days before a Type
Ibn supernova
Spectroscopic observations of progenitor activity 100 days before a Type
Ibn supernova
Obtaining spectroscopic observations of the progenitors of core-collapse supernovae is often unfeasible due to an inherent lack of knowledge as to which stars will go supernova and when they will explode. In this letter, we present photometric and spectroscopic observations of the progenitor activity of SN 2023fyq in the preceding …