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The chemical abundances of Planetary Nebulae in Centaurus-A (NGC 5128)

Published online by Cambridge University Press:  25 May 2016

N. A. Walton ,
J. R. Walsh ,
G. Jacoby  and
R. F. Peletier
N. A. Walton
Affiliation:
1 Isaac Newton Group, Royal Greenwich Observatory, La Palma
J. R. Walsh
Affiliation:
2European Southern Observatory, Munich
G. Jacoby
Affiliation:
3NOAO, Kitt Peak, USA
R. F. Peletier
Affiliation:
4Kapteyn Laboratorium, Groningen, The Netherlands

Extract

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Abundances in early-type galaxies are measured from the analysis of stellar spectra (e.g. colour indices, Peletier et al, 1990). The presence of many planetary nebulae (PN) in early-type galaxies provides an independent measure of abundances for the old stellar population and allows the spread in abundances to be sampled at a range of galacto-centric distances. PN are feasible for this project since the nebular O, Ne and S abundances in most PN reflect that of the progenitor star.

Type
VIII. Planetary Nebulae in Extragalactic Systems
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 478
Copyright
Copyright © Kluwer 1997 

References

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