The high resolution infrared spectrum of HCl${}^{+}$

Abstract

The chloroniumyl cation, HCl${}^{+}$, has been recently identified in space from Herschel's spectra. A joint analysis of extensive vis-UV spectroscopy emission data together with a few high resolution and high accuracy mm-wave data provided the necessary rest frequencies to support the astronomical identification. Nevertheless, the analysis did not include any infrared vibration-rotation data. Furthermore, with the end of the Herschel mission, infrared observations from ground may be one of the few available means to further study this ion in space. In this work we provide a set of accurate rovibrational transition wavenumbers as well as a new and improved global fit of vis-UV, IR and mm-wave spectroscopy laboratory data, that will aid in future studies of this molecule.

arXiv commentPublished in the Astrophysical Journal Letters

References in corpus (9)

• The chemistry of interstellar molecules containing the halogen elements
• Interstellar Hydrides
• Comparative study of CH+ and SH+ absorption lines observed towards distant star-forming regions
• Herschel/HIFI discovery of interstellar chloronium (H${}_2$Cl${}^{+}$)
• Herschel observations of interstellar chloronium
• Detection of chloronium and measurement of the 35Cl/37Cl isotopic ratio at z=0.89 toward PKS1830-211
• New accurate measurement of 36ArH+ and 38ArH+ ro-vibrational transitions by high resolution IR absorption spectroscopy
• Improved determination of the 1(0)-0(0) rotational frequency of NH3D+ from the high resolution spectrum of the v4 infrared band
• Fundamental Vibrational Transitions of HCl Detected in CRL 2136

Cited by in corpus (2)

• First laboratory detection of vibration-rotation transitions of CH${}^{+}$ and ${}^{13}$CH${}^{+}$ and improved measurement of their rotational transition frequencies
• Accurate frequency determination of vibration-rotation and rotational transitions of SiH+