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Age Effects in Giant Extragalactic HII Regions

Published online by Cambridge University Press:  12 April 2016

J. Masegosa  and
M. Moles
J. Masegosa
Affiliation:
Instituto de Astrofísica de Andalucía, Granada. Spain
M. Moles
Affiliation:
Instituto de Astrofísica de Andalucía, Granada. Spain

Extract

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Spatial inhomogeneities for a sample of Giant Extragalactic HII Regions (GEHR) have been analyzed. The results indicate that, whitin the observational errors, the O/H and He/H abundance ratios are constant for a given GEHR. The Ne/O ratio on the other hand shows a trend with the evolution of the ionizing stellar clusters.

Type
V. The Extragalactic ISM
Information
International Astronomical Union Colloquium , Volume 120: Structure and Dynamics of the Interstellar Medium , 1989 , pp. 369
Copyright
Copyright © Springer-Verlag 1989