The laboratory spectrum of the PS radical and related astronomical search

Details The laboratory spectrum of the PS radical and related astronomical search The laboratory spectrum of the PS radical and related astronomical search

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...329..511o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 329, June 1, 1988, p. 511-516. Research supported by the Japan Society for

Astronomy and Astrophysics

Astronomy

14

Astronomical Spectroscopy, Free Radicals, Interstellar Matter, Molecular Spectra, Hyperfine Structure, Line Spectra, Millimeter Waves, Radio Sources (Astronomy), Rotational Spectra

Scientific paper

The millimeter-wave rotational spectrum of the PS radical (X 2Pi r) was observed in the laboratory for the first time in the frequency region of 79-293 GHz by discharging the mixture of PSCl3 and He. Some 44 lines were measured, and the rotational constant, the centrifugal distortion constant, the centrifugal distortion term of the spin-orbit coupling constant, the Lambda-type doubling constants, and the hyperfine coupling constants were determined. Based on the measured and calculated frequencies, an astronomical search for the interstellar and circumstellar PS radical was made without success in Orion KL, Sgr B2, L134N,IRC + 10216, VY CMa, and OH 231.8 + 4.2.

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