Universität zu Köln

Lattanzi, V., Gottlieb, C. A., Thaddeus, P., Thorwirth, S. and McCarthy, M. C. (2010). THE ROTATIONAL SPECTRUM OF THE NCO- ANION. Astrophys. J., 720 (2). S. 1717 - 1721. BRISTOL: IOP PUBLISHING LTD. ISSN 0004-637X

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Abstract

The rotational spectrum of the negative molecular ion NCO- has been observed both in a supersonic molecular beam and in a low-pressure glow discharge. The identification is ironclad because of the previous infrared detection of NCO-, the presence of well-resolved nitrogen quadrupole hyperfine structure, and the observation of nine harmonically related transitions in the millimeter band. The spectroscopic constants B and D are three orders of magnitude more accurate than those derived from the earlier IR measurements, and the theoretical eQq is in good agreement with that measured. The entire rotational spectrum can now be calculated well into the THz region to 1 km s(-1) in equivalent radial velocity or better. NCO- is an excellent candidate for radio astronomical detection because of its high stability, polarity, and favorable partition function. The fairly high concentration of NCO- in our laboratory source implies that other molecular anions containing the NCO group may be detectable in the radio band.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lattanzi, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gottlieb, C. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thaddeus, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thorwirth, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED McCarthy, M. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-496621
DOI:	10.1088/0004-637X/720/2/1717
Journal or Publication Title:	Astrophys. J.
Volume:	720
Number:	2
Page Range:	S. 1717 - 1721
Date:	2010
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	0004-637X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NEGATIVE-IONS; ASTRONOMICAL IDENTIFICATION; AUTODETACHMENT SPECTROSCOPY; LASER SPECTROSCOPY; COUPLED-CLUSTER; INTERSTELLAR; ACID; HNCO; CN; DYNAMICS Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49662