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The Planetary Nebula in the Fornax Dwarf Galaxy

Published online by Cambridge University Press:  22 September 2016

I.J. Danziger
Affiliation:
Anglo-Australian Observatory, Epping, N.S.W., Australia
M. Dopita
Affiliation:
Mt. Stromlo and Siding Spring Observatory, Canberra, A.C.T., Australia
T.G. Hawarden
Affiliation:
U.K. Schmidt Telescope Unit, Royal Observatory, Edinburgh
B.L. Webster
Affiliation:
Anglo-Australian Observatory, Epping, N.S.W., Australia

Extract

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A planetary nebula has been identified near the center of the Fornax dwarf elliptical galaxy. Quantitative spectrophotometry reveals that it is slightly reddened, and belongs to an intermediate-excitation class, with a normal helium abundance. Since the abundances of all 2 to 3 times lower than in the Orion nebula, the material in the nebula which has a mass ≥ 0.1 M probably represents at least a second generation of processed matter. The implications of this conclusion are briefly discussed from the point of view of heavy element enrichment in low mass systems such as Fornax whose mass is 2×107 M. (Paper will appear in The Astrophysical Journal.)

Type
Session I: The Distribution of Planetary Nebulae
Copyright
Copyright © Reidel 1978