N${}_2$H${}^{+}$ and N${}^{15}$NH${}^{+}$ towards the prestellar core 16293E in L1689N

F. Daniel, A. Faure, L. Pagani +6

Understanding the processes that could lead to enrichment of molecules in ${}^{15}$N atoms is of particular interest in order to shed light on the relatively large variations observe…