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Chemical Compositions of Planetary and Diffuse Nebulae

Published online by Cambridge University Press:  25 April 2016

L. H. Aller*
Affiliation:
Physics Department, University of Queensland and Astronomy Department, University of California, Los Angeles

Extract

Detailed physical mechanisms responsible for excitation of spectral lines in gaseous nebulae have been known for 50 years, and reasonable estimates of nebular densities and temperatures were obtained in the late thirties and early forties. However quantitative chemical analyses have proven difficult partly because of uncertainties in atomic parameters (notably collision strengths) and partly because of complications posed by the nebulae themselves.

Type
Invited Papers
Copyright
Copyright © Astronomical Society of Australia 1978

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References

Aller, L.H., Publ. Astron. Soc. Pacific, 574 (1976) in Planetary Nebulae, International Astron. Union Symposium Nr 76, ed. Terzian, Y. Doredrecht. Reidel Publ. (1978).Google Scholar
Aller, L. H., Czyzak, S.J., Keys, C. D. and Boeshaar, G., Proc. Natl. Acad. Sci. (USA), 71, 4496 (1974).CrossRefGoogle Scholar
Aller, L. H., Czyzak, S.J., and Keyes, C. D., Proc. Natl Acad. Sci., 74, 5203 (1975).Google Scholar
Balick, B., Astrophys., J., 201, 705 (1975).Google Scholar
Balick, B., and Sneden, C., Astrophys. J., 208, 336 (1976).Google Scholar
Barker, T., Astrophys., J., 219 (1978).Google Scholar
Bednarek, B., and Clarke, W. (quoted by Aller, L. H. in Annals, New York Acad. Sci., 194, 45 (1972).Google Scholar
Bohlin, R. C, Harrington, J. P., and Stecher, T.P., Astrophys. J. (in press,) (1978).Google Scholar
Bowen, I. S., and Wyse, A. B., Lick Observatory Bull. 19, 1 (1939).Google Scholar
Buerger, E. G., Astrophys. J., 180, 817 (1973).CrossRefGoogle Scholar
Cassinelli, J. P., Astrophys. J., 165, 265 (1971).Google Scholar
Czyzak, S. J., Aller, L. H., and Kaler, J. B., Astrophys. J., 154, 543, (1968).CrossRefGoogle Scholar
Dufour, R. Astrophys. J. 315 (1975)Google Scholar
Dufour, R. J., and Harlow, W. V., Astrophys. J., 216, 705 (1977).Google Scholar
Faulker, D. J., and Aller, L. H., Mon. Not. Royal. Astron. Soc, 130, 393 (1965).Google Scholar
Flower, D. R., Astrophys, Lett., 2, 205 (1968).Google Scholar
Flower, D. R., Mon. Not. Roy. Astron. Soc, 146, 171, 243 (1969).CrossRefGoogle Scholar
Goodson, W. L., Zeits. f. Ap., 66, 118 (1967).Google Scholar
Harrington, J. P., Astrophys. J., 152, 943 (1968).Google Scholar
Harrington, J. P., Astrophys. J., 156, 903 (1969).Google Scholar
Heap, S., Aller, L. H., and Czyzak, S. J., Astrophys. J., 157, 607 (1969).Google Scholar
Kaler, J. B., in Planetary Nebulae, International Astr. Union Symph. Nr 76 ed. Terzian, Dordrecht, Y., Reidel Publ. (1978).Google Scholar
Kirkpatrick, R. C, Astrophys. J., 162, 33 (1970).Google Scholar
Kirkpatrick, R. C, R. C, Astrophys. J., 176, 381 (1972).CrossRefGoogle Scholar
Krueger, T. K., and Czyzak, S. J., Proc. Roy. Soc, A318, 531 (1970).Google Scholar
Kunasz, P. B., Hummer, D. G., and Mihalas, D., Astrophys. J., 202, 92 (1975).Google Scholar
Miller, J. S., Astrophys. J., 157, 1215 (1969).Google Scholar
Pagel, B., Edmunds, M., Fosbury, R. A., and Webster, B. L., Mon. Not. Roy. Astron. Soc. (in press, 1978).Google Scholar
Peimbert, M., Mem. Soc Roy. Sci. Liege, 6th Ser. 5, 307 (1973).Google Scholar
Peimbert, M., and Torres-Peimbert, S., Astrophys. J., 193, 327 (1974).Google Scholar
Peimbert, M., and Costero, R., Bol. Obs. Tonanzintla y Tacubaya, 6, 36 (1969).Google Scholar
Peimbert, M., and Torres-Peimbert, S., Astrophys. J., 203, 531 (1976).Google Scholar
Peimbert, M., and Torres-Peimbert, S., Revista Mexicana Astr. & Astrophys. (in press, 1978).Google Scholar
Peters, G., Astrophys. J. Suppl., 30, 551 (1976).Google Scholar
Pradhan, A. K., Mon. Not. Roy. Astron. Soc, 177, 31 (1976).Google Scholar
Ross, J. E., and Aller, L. H., Science, 191, 1223 (1976).Google Scholar
Seaton, M. J., Mon. Not. Roy. Astron. Soc, 139, 129 (1968).Google Scholar
Shields, G., Astrophys. J., 193, 335 (1974).Google Scholar
Shields, G. A., Astrophys. J., 195, 475 (1975).Google Scholar
Shields, G., Astrophys. J., 219, 565 (1978).Google Scholar
Webster, B. L., Mon. Not. Roy. Astron. Soc, 174, 157 (1976).CrossRefGoogle Scholar
Williams, R. E., Planetary Nebulae, IAU Symposium Nr 34, Osterbrock, D., and O’Dell, C. R. (eds) Dordrecht, Reidel Publ. (1968).Google Scholar
Woosley, S. E., Arnett, W. D., and Clayton, D. C, Astroohys. J. Suppl., 30, 551 (1976).Google Scholar