Dense Iron Ejecta and Core-collapse Supernova Explosion in the Young Supernova Remnant G11.2-0.3

Dae-Sik Moon, Bon-Chul Koo, Ho-Gyu Lee +5

We present the results of near-infrared spectroscopic observations of dense ($\simgt$ 10${}^3$ cm${}^{-3}$) iron ejecta in the young core-collapse supernova remnant G11.2-0.3. Five eje…