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2013ApJ...771L..11D - Astrophys. J., 771, L11 (2013/July-1)

Improved determination of the 10-00 rotational frequency of NH3D+ from the high-resolution spectrum of the ν4 infrared band.

DOMENECH J.L., CUETO M., HERRERO V.J., TANARRO I., TERCERO B., FUENTE A. and CERNICHARO J.

Abstract (from CDS):

The high-resolution spectrum of the ν4 band of NH3D+ has been measured by difference frequency IR laser spectroscopy in a multipass hollow cathode discharge cell. From the set of molecular constants obtained from the analysis of the spectrum, a value of 262817±6 MHz (±3σ) has been derived for the frequency of the 10-00 rotational transition. This value supports the assignment to NH3D+ of lines at 262816.7 MHz recorded in radio astronomy observations in Orion-IRc2 and the cold prestellar core B1-bS.

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Journal keyword(s): ISM: molecules - line: identification - methods: laboratory - molecular data - techniques: spectroscopic

Simbad objects: 2

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