Revealing the progenitor of SN 2021zby through analysis of the $TESS$ shock-cooling light curve

Qinan Wang, Patrick Armstrong, Yossef Zenati +34

We present early observations and analysis of the double-peaked Type IIb supernova (SN IIb) 2021zby. $TESS$ captured the prominent early shock cooling peak of SN 2021zby within the…