Abundance gradients from Planetary Nebulae in the galactic disk-Reference-Cited by-同舟云学术

Abundance gradients from Planetary Nebulae in the galactic disk

Published:1997 Issue: Volume:180 Page:397-404
ISSN:0074-1809
Container-title:Symposium - International Astronomical Union
language:en
Short-container-title:Symp. - Int. Astron. Union

Author:

Maciel W.J.

Abstract

Radial abundance gradients in the disks of spiral galaxies are made evident from observations of ionized nebulae (HII regions, planetary nebulae, and SNRs) and stars. They have been observed for several chemical elements, and their presence is an established fact, despite some inconsistencies in the results. Therefore, these gradients can be considered as an additional constraint to the chemical evolution models, as the age-metallicity relation or the metallicity distribution of the G-dwarfs.

Publisher

Cambridge University Press (CUP)

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