The C${}^{14}$N/C${}^{15}$N Ratio in Diffuse Molecular Clouds

Adam M. Ritchey, Steven R. Federman, David L. Lambert

We report the first detection of C${}^{15}$N in diffuse molecular gas from a detailed examination of CN absorption lines in archival VLT/UVES spectra of stars probing local diffuse c…