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International Astronomical Union Colloquium (1)

International Astronomical Union (1)

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Extended Atmospheres of Planetary Nuclei
K. H. Böhm, J. Cassinelli
Journal:

International Astronomical Union Colloquium / Volume 2 / August 1970

Published online by Cambridge University Press:

08 February 2017, pp. 54-60

Print publication:

August 1970
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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.