Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cajph..68..551p&link_type=abstract
Canadian Journal of Physics (ISSN 0008-4204), vol. 68, July-Aug. 1990, p. 551-562. Research supported by DFG and Fonds der Chemi
Astronomy and Astrophysics
Astronomy
3
Carbon Dioxide Lasers, Infrared Spectra, Silanes, Silicon Isotopes, Fourier Transformation, Infrared Astronomy, Planetary Nebulae, Spectral Bands
Scientific paper
Silane isotopomers may be of some importance in IR astronomy, since the main isotopomer (with Si-28) has already been discovered in a planetary nebula surrounding the IR star IRC + 10216. With a view toward future isotope investigations of stellar objects, the IR spectrum of two silane isotopomers containing Si-29 and Si-30 is investigated with tunable CO2 laser sidebands in the 877-954-kayser range at a resolution of 0.00002 kayser. An analysis is performed of the nu2 and nu4 dyad, including data by Henry and Valentin (1986) from a Fourier transform spectrum and sub-Doppler lines observed by Borde (1983) and Skrzypczak et al. (1989). Forty-one vibration-rotation constants of the nu2/nu4 Hamiltonian are determined from the spectrum fitting.
Kreiner W. A.
Pierre Guillon
Prinz H.
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