ZTF18aalrxas: A Type IIb Supernova from a Very Extended Low-mass Progenitor
ZTF18aalrxas: A Type IIb Supernova from a Very Extended Low-mass Progenitor
We investigate ZTF18aalrxas, a double-peaked Type IIb core-collapse supernova (SN) discovered during science validation of the Zwicky Transient Facility (ZTF). ZTF18aalrxas was discovered while the optical emission was still rising towards the initial cooling peak (0.7 mag over 2 days). Our observations consist of multi-band (UV, optical) light-curves, and optical …