no code implementations • 4 Sep 2020 • Kishalay De, U. Christoffer Fremling, Avishay Gal-Yam, Ofer Yaron, Mansi M. Kasliwal, S. R. Kulkarni
The presence of H, together with the large [Ca II]/[O I] ratio ($\approx10-15$) in the nebular phase is consistent with SN 2019ehk being a Type IIb core-collapse supernova from a stripped low mass ($\approx9-9. 5$ M$_\odot$) progenitor, similar to the Ca-rich SN IIb iPTF 15eqv.
High Energy Astrophysical Phenomena Solar and Stellar Astrophysics