Sign on
ADS Classic is now deprecated. It will be completely retired in October 2019. This page will automatically redirect to the new ADS interface at that point.

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (35) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
The rotational spectra of HOCO/plus/, HOCN, HN3, and HNCO from quantum mechanical calculations
Authors:
Defrees, D. J.; Loew, G. H.; McLean, A. D.
Affiliation:
AA(Molecular Research Institute, Palo Alto, CA), AB(Molecular Research Institute, Palo Alto, CA), AC(IBM Research Laboratory, San Jose, CA)
Publication:
Astrophysical Journal, Part 1, vol. 254, Mar. 1, 1982, p. 405-411. (ApJ Homepage)
Publication Date:
03/1982
Category:
Atomic and Molecular Physics
Origin:
STI
NASA/STI Keywords:
Hydrazoic Acid, Hydrocyanic Acid, Interstellar Gas, Molecular Spectra, Quantum Mechanics, Rotational Spectra, Carbon Dioxide, Microwave Spectra, Molecular Clouds, Molecular Orbitals
DOI:
10.1086/159745
Bibliographic Code:
1982ApJ...254..405D

Abstract

Ab initio molecular orbital theory has been used to determine the equilibrium geometries, rotational constants, and rotational spectra of four isoelectronic molecules. Two of these, HOCO(plus) and HOCN, are candidate interstellar molecules. The other two, HNCO and HN3, have known rotational constants. Theoretical rotational constants and spectra for the two unknown species were corrected with the mean experimental to theoretical ratios from the two known species. This procedure resulted in predicted frequencies of 83.75 plus or minus 0.2 GHz for the 4(04) to 3(03) transition in HOCN and 85.08 plus or minus 0.2 GHz for the same transition in HOCO(plus). These are the central lines of triplets whose other members are the 4(14) to 3(13) and 4(13) to 3(12) transitions. The triplet splittings were predicted to be 0.36 plus or minus 0.01 GHz for HOCN and 0.33 plus or minus 0.01 GHz for HOCO(plus). These results indicate that HOCO(plus) is a better candidate for the source of a series of lines reported by Thaddeus, Guelin, and Linke than is HOCN.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints