High precision far-infrared spectroscopy of molecules and ions preparing for the future detection of interstellar species in the far-infrared region

利用日本富山大学的远红外光谱仪，对分子和分子离子的转动跃迁频率进行了精确测量，测量精度可达几十kHz。测定的物种有H_2D^、NH_3、N_2H_^和H_2F^。所获得的光谱数据支持了几个国际星际物种研究项目(如ALMA、SOFIA、Herschel)的远红外研究。我们的H_2F数据将对在太空中寻找这一物种起到重要作用。

Rotational transition frequencies of molecules and molecular ions were measured precisely with an accuracy of several tens of kHz by using far-infrared spectrometer in Toyama University. Measured species were H_2D^+, NH_3, N_2H^+, and H_2F^+. Obtained spectral data supports the far-infrared investigations in several international research projects of interstellar species(such as ALMA, SOFIA, Herschel). Our data of H_2F^+will play an important role in searching for this species in space.