SN 2024aecx: A Fast-evolving Type IIb Supernova with a Prominent Shock-cooling Peak
Qiang Xi, Ning-Chen Sun, David Aguado, Ismael Pérez-Fournon et autres
Abstract SN 2024aecx is a nearby (∼11 Mpc) Type IIb SN discovered within ∼1 day after explosion. In this paper we report high-cadence photometric (typically 0.5 ∼ 1 day) and spectroscopic follow-up observations, conducted from as early as 0.27 day post discovery …