Abstract
The potential energy curves for the electronic ground states of astrophysically important YO, CrO, BN, ScO, SiO and AlO molecules are constructed techniques using the five-parameter Hulburt-Hirschfelder function. The estimated dissociation energies are 7.235±0.15, 4.337 ± 0.09, 3.917 ± 0.09, 6.899 ± 0.14, 8.181 ± 0.17 and 5.202 ± 0.11 eV for YO, CrO, BN, ScO, SiO and AlO, respectively. The estimated D0 values are in reasonably good agreement with literature values. The r-Centroids and Franck-Condon factors for the bands of B2 Σ+ − X2 Σ+ of YO, B5 Π −X5 Π> of CrO, A3 Π − X3 Π of BN, B2 Σ+ −X2 Σ+ of ScO, E1 Σ+ − X1 Σ+ of SiO and D2 Σ+ − X2 Σ+ and B2 Σ+ −X2 Σ+ of AlO molecules have been determined. The Franck-Condon factors are evaluated by the approximate analytical method of Jarmain and Fraser. The absence of the bands in these systems is explained.
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Ackerman, R.J. and Rauh, E.G.: 1974, J. Chem. Phys. 60, 2266.
Adams, A., Klemperer, W. and Dunn, T.M.: 1968, Can. J. Phys. 46, 2213.
Akerlind, L.: 1962, Ark. Fysik. 22, 41.
Allen, C.W.: 1985, Astrophysical Quantities, The Athlone Press, London, p. 48.
Babcock, H.D.: 1945, Astrophys. J. 102, 154.
Bernard, A., Bacis, R. and Luc, P.: 1979, Astrophys. J. 227, 338.
Birge, R.T. and Sponer, H.: 1926, Phys. Rev. 28, 259.
Bredohl, H., Cornet, R., Dubois, I. and Remy, F.: 1974, J. Phys. B7, L66.
Bredohl, H., Cornet, R., Dubois, I. and Wilderia, D.: 1975, J. Phys. B8, L259.
Bredohl, H., Dubois, I., Houbrechts, Y. and Nzohabonayo, P.: 1984, J. Phys. B17, 95.
Chakraborty, B. and Pan, Y.K.: 1973, Appl. Spctro. Rev. 7(2), 283.
Chalek, C.L. and Gole, J.L.: 1976, J. Chem. Phys. 32, 2845.
Darwent, B.B.: 1970, Bond Dissociation Energies in Simple Molecules, NSRDS-NBS 31, National Bureau of Standards, Washington, D.C.
Davis, D.N.: 1947, Astrophys. J. 106, 28.
Douglas, A.E. and Herzberg, G.: 1940, Can. J. Res. 18A, 179.
Elander, N. and Lagerqvist, A.: 1971, Phys. Scripta 3, 267.
Fraser, P.A. and Jarmain, W.R.: 1953, Proc. Phys. Soc. 66A, 1153.
Gaydon, A.G.: 1968, Dissociation energies and Spectra of diatomic molecule, Chapman & Hall, New York.
Herzberg, G.: 1965, Spectra of diatomic molecules, 2nd Ed., Van Nostrand, Princeton.
Hocking, W.H., Merer, A.J., Milton, D.T., Jones, W.E. and Krishnamurthy, G.: 1980, Can. J. Phys. 58, 516.
Huber, K.P. and Herzberg, G.: 1979, Molecular Spectra and Molecular Structre, Vol. IV: Constants of diatomic molecules, Van Nostrand, New York.
Hultgren, R., Orr, R.L. and Kelly, K.K.: 1967, Supplement to Selected Values of Thermodynamic Properties of Metals and Alloys, Univ. of California, Berkeley, California.
Jaschek carls and Jaschek Marcedes: 1995, The behaviour of chemical elements in stars, Cambridge University Press, Cambridge.
Jevons, W.: 1963, in: R.W.B. Pearse and A.G. Gaydon (eds.), The Identification of Molecular Spectra, Chapman & Hall, p. 63.
Johnson, L.W. and Johnson, R C.: 1931, Proc. Roy. Soc. A 133, 207.
Karna, S.P. and Grein, F.: 1985, Chem. Phys. 98, 207.
Klein, O.: 1932, Z. Phys. 76, 226.
Largerqvist, A., Renhorn, I. and Elander, N.: 1973, J. Mol. Spectrosco. 46, 285.
Lide, D.R. (ed.): 1993–94, CRC Handbook of Chemistry and Physics, 74th Edn., CRC Press, Tokyo.
Lin, T.M.: 1949, Compt. Rend. 229, 1301.
Meggers, W.F. and Wheeler, J.A.: 1931, Bur. Stand. J. Res. 6, 239.
Nicholls, R.W. and Jarmain, W.R.: 1956, Proc. Phys. Soc. 69A, 253.
Nicholls, R.W.: 1977, Rev. Astron. Astrophys. 15, 197.
Rees, A.L.G.: 1947, Proc. Phys. Soc. 59, 998.
Reddy, R.R. and Viswanath, R.: 1989, Astrophys. Space Sci. 155, 39.
Reddy, R.R. and Viswanath, R.: 1990, J. Astrophys. Astron. 11, 67.
Reddy, R.R., Rao, T.V.R. and Viswanath, R.: 1992, Astrophys. Space Sci. 189, 29.
Reddy, R.R., Nazeer Ahammed, Y., Srinivasa Rao, A. and Rao, T.V.R.: 1995, J. Quant. Spectro. Radiat. Transfer 54, 1035.
Rydberg, R.: 1931, Z. Phys. 73, 376.
Steele, D., Lippincott, E.R. and Vanderslice, J.T.: 1962, Rev. Mod. Phys. 34, 239.
Swings, P.: 1958, Encyclopaedia of Physics, Springer-Verlag, Berlin.
Thrush, B.A.: 1960, Nature 186, 1044.
Vanderslice, J.T., Mason, E.A., Maisch, W.G. and Lippincott, E.R.: 1959, J. Molec. Spectrosc. 3, 17.
Vanderslice, J.T., Mason, E.A., Maisch, W.G. and Lippincott, E.R.: 1960, J. Molec. Spectrosc. 5, 83.
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Reddy, R., Nazeer Ahammed, Y., Rama Gopal, K. et al. RKRV Potential Energy Curves, Dissociation Energies, γ-Centroids And Franck-Condon Factors Of YO, CrO, BN, ScO, SiO And AlO Molecules. Astrophysics and Space Science 262, 223–240 (1998). https://doi.org/10.1023/A:1001848028629
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DOI: https://doi.org/10.1023/A:1001848028629