Abstract

view Abstract Citations (28) References (43) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Comet-Tail (A--X) System of CO +: Precise Molecular Constants of Its X 2 Sigma +, A 2 Pi i, and B 2 Sigma + States Haridass, C. ; Prasad, C. V. V. ; Reddy, S. P. Abstract The comet-tail (A 2 Pii-X 2Sigma(+)) system of the molecular ion (C-12)(O-16)(+), excited in the cathode glow of a hollow-cathode discharge tube of special design, was photographed in the spectral region 3400-8500 A. Of the 17 observed bands with v-prime = 0-8 and v-double prime = 0-4, the rotational structure of 12 bands with v-prime = 0-4 and 6 and v-double prime = 0-4 was analyzed. An effective Hamiltonian was used to obtain the molecular constants of the individual bands from their wavenumber data and the constants for the A and X states were then determined by merging the molecular constants thus obtained by the method of correlated least-squares fit. Recent experimental data of (C-12)(O-16)(+) available for the first negative (B 2Sigma(+)-X 2Sigma(+)) and the Baldet-Johnson (B 2Sigma(+)-A 2Pii) systems and for the IR spectrum involving v = 0 and 1, and the microwave spectra involving v = 0, 1, and 2, of its ground state X, were reanalyzed using this effective Hamiltonian. A precise set of molecular constants for the X, A, and B states of (C-12)(O-16)(+) is determined by the procedures referred to above. The astrophysical importance of the spectra of CO(+) is also briefly outlined. Publication: The Astrophysical Journal Pub Date: April 1992 DOI: 10.1086/171183 Bibcode: 1992ApJ...388..669H Keywords: Carbon Monoxide; Comet Tails; Electron States; Molecular Ions; Positive Ions; Cathode Glow; Ground State; Hollow Cathodes; Infrared Spectra; Microwave Spectra; Astrophysics; LINE: IDENTIFICATION; MOLECULAR DATA; TECHNIQUES: SPECTROSCOPIC full text sources ADS |

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