JWST observations of segregated ${}^{12}$CO${}_2$ and ${}^{13}$CO${}_2$ ices in protostellar envelopes

N. G. C. Brunken, A. C. A. Boogert, E. F. van Dishoeck +13

The evolution of interstellar ices can be studied with thermal tracers such as the vibrational modes of CO${}_2$ ice that show great diversity depending on their local chemical and t…