Astron. Astrophys. 363, L37-L39 (2000)

Letter to the Editor

The submillimeter-wave spectrum of hydrogenisocyanide, HNC, in its (0,0,0) and (0,1,0) vibrational states up to 2 THz

S. Thorwirth, H.S.P. Müller, F. Lewen, R. Gendriesch and G. Winnewisser

Universität zu Köln, I. Physikalisches Institut, Zülpicher Str. 77, 50937 Köln, Germany (sven@ph1.uni-koeln.de)

Received 30 October 2000 / Accepted 14 November 2000

Abstract

The submillimeter-wave spectrum of hydrogenisocyanide, HNC, in its ground vibrational and first excited bending states (vibrational states are denoted ) has been measured from 453 to 1991 GHz spanning the rotational quantum numbers . The new transition frequencies were fitted together with previously published data, providing a comprehensive set of molecular parameters up to sextic centrifugal distortion constants. The present data set allows for the prediction of accurate rest frequencies well beyond 2 THz.

Key words: molecular data methods: laboratory techniques: spectroscopic ISM: clouds ISM: molecules radio lines: ISM

Send offprint requests to: S. Thorwirth, G. Winnewisser

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Contents

• 1. Introduction
• 2. Experimental
• 3. Analysis and discussion
• Acknowledgements
• References

© European Southern Observatory (ESO) 2000

Online publication: December 5, 2000
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