SN 2017dio: A Type-Ic Supernova Exploding in a Hydrogen-rich Circumstellar Medium<sup>โ</sup>
SN 2017dio: A Type-Ic Supernova Exploding in a Hydrogen-rich Circumstellar Medium<sup>โ</sup>
SN 2017dio shows both spectral characteristics of a type-Ic supernova (SN) and signs of a hydrogen-rich circumstellar medium (CSM). Prominent, narrow emission lines of H and He are superposed on the continuum. Subsequent evolution revealed that the SN ejecta are interacting with the CSM. The initial SN Ic identification was โฆ