Fractionation in young cores: Direct determinations of nitrogen and carbon fractionation in HCN

S. S. Jensen, S. Spezzano, P. Caselli +4

We aim to determine the ${}^{14}$N/${}^{15}$N and ${}^{12}$C/${}^{13}$C ratios for HCN in six starless and prestellar cores and compare the results between the direct method using radiativ…