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The discovery of heavy elements (Z > 30) in NGC 7027

Published online by Cambridge University Press:  25 May 2016

D. Péquignot  and
J.-P. Baluteau
D. Péquignot
Affiliation:
1Observatoire de Meudon
J.-P. Baluteau
Affiliation:
2Laboratoire d'Astronomie Spatiale, Marseille

Extract

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An important aim of nebular spectroscopy is the identification of new elements. Since the pioneering work of Bowen (1928), who identified the “nebulium” lines with forbidden lines of abundant elements, most elements in nebulae have been discovered thanks to forbidden lines. The number of elements known in planetary nebulae and H II regions was 2, 5, 15, 17, and 20 in 1896, 1927, 1938, 1960, and 1975 respectively.

Type
III. Central Stars
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 128 - 129
Copyright
Copyright © Kluwer 1997 

References

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