THE ROTATIONAL SPECTRA OF $S_{3}$ AND $S_{4}$
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Date
2004
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Following the initial detection of the pure sulfur clusters $S_{3}$ and $S_{4}$ at centimeter wavelengths by Fourier transform microwave $spectroscopy^{a}$, $S_{3}$ has subsequently been observed at millimeter wavelengths. Thirteen spectroscopic constants reproduce over 60 transitions of $S_{3}$ between 9 and 460 GHz (with $J \leq 87$ and $K_{a} \leq 7$) to within the measurement uncertainties. From these the frequencies of the astrophysically relevant lines of $S_{3}$ can be calculated to about 1 part in $10^{7}$ up to 500 GHz, allowing deep searches in the atmosphere of Io, dense molecular cores, and circumstellar shells of late-type stars with existing millimeter- and submillimeter-wave telescopes.
Description
$^{a}$ M. C. McCarthy, S. Thorwirth, C. A. Gottlieb, and P. Thaddeus, J. Am. Chem. Soc., in press.
Author Institution: Harvard-Smithsonian Center for Astrophysics; Division of Engineering and Applied Sciences, Harvard University
Author Institution: Harvard-Smithsonian Center for Astrophysics; Division of Engineering and Applied Sciences, Harvard University