N in Galactic high-mass star-forming cores

The fractionation of nitrogen (N) in star-forming regions is a poorly understood process. To put more stringent observational constraints on the N-fractionation, we have...恒星形成区中的氮（N）分馏过程是一个尚未被充分阐明的过程。为了对氮分馏施加更为严格的观测约束，我们已……