SN 2021foa: the bridge between SN IIn and Ibn

Anjasha Gangopadhyay, Naveen Dukiya, Takashi J Moriya +26

We present the long-term photometric and spectroscopic analysis of a transitioning SN~IIn/Ibn from $-$10.8 d to 150.7 d post $V$-band maximum. SN~2021foa shows prominent He {\sc i}…