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Extended Atmospheres of Planetary Nuclei

Published online by Cambridge University Press:  08 February 2017

K. H. Böhm  and
J. Cassinelli
K. H. Böhm
Affiliation:
University of Washington, Seattle
J. Cassinelli
Affiliation:
University of Washington, Seattle

Abstract

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Exploratory calculations on nongray, hydrostatic-equilibrium model envelopes for central stars of planetary nebulae of high temperature and possibly near the instability limit are reported. It is conjectured that these may be related to Wolf-Rayet type nuclei; it appears possible to obtain an OV absorption, and OVI emission, spectrum even in an LTE calculation.

Keywords

nongracentral stars of planetary nebulaWolf-Rayet nucleinstability limit
Type
Part A. Type of Problems that Exist
Information
International Astronomical Union Colloquium , Volume 2: Spectrum Formation in Stars With Steady-State Extended Atmospheres , August 1970 , pp. 54 - 60
Copyright
Copyright © 1970

References

Böhm, K. H. 1968, I.A.U. Symposium No. 34 “Planetary Nebulae,” eds. Osterbrock, D. R. and O'Dell, C. R., Dordrecht: D. Reidel Publ. Co., p. 297.Google Scholar
Böhm, K. H. 1969, Astron. and Astrophys. 1, 180.Google Scholar
Carlson, B. G., and Lathrop, K. D. 1968, Computing Methods in Reactor Physics, eds. Greenspan, H., Kelber, C. N., Okrent, D., New York: Gordon and Breach, p. 167.Google Scholar
Harman, R. J., and Seaton, M. J. 1964, Ap. J. 149, 824.Google Scholar
O'Dell, C. R. 1968, I.A.U. Symposium No. 34 “Planetary Nebulae,” eds. Osterbrock, D. E. and O'Dell, C. R., Dordrecht: D. Reidel Publ. Co., p. 361.Google Scholar
Schmid-Burgk, J. 1968, unpublished.Google Scholar