W. J. Maciel, R. D. D. Costa, O. Cavichia
Published 2016-12-14Version 1
Photoionized nebulae comprise basically HII regions and planetary nebulae, and their abundances give important clues on the nucleosynthesis and chemical evolution of their host galaxies. There is presently a large amount of data on these objects, especially for the elements He and N, which are strongly affected by the evolution of intermediate mass stars, as well as O, Ne, S, and Ar, which are essentially synthesized in stars with larger masses. The abundances of these elements in several systems in the Local Group are discussed on the basis of distance-independent correlations.
Comments: 6 figures, 9 pages, proceedings of the Chemical Abundances in Gaseous Nebulae Workshop. To be published in AAA Workshop Series 12, 2016, G. H\"agele, M. Cardaci & E. P\'erez-Montero, eds, also available at http://www.astro.iag.usp.br/~maciel/research/research.html
Chemical Evolution of R-process Elements in Stars (CERES). I. Stellar parameters and chemical abundances from Na to Zr
Chemical Abundances in Active Galaxies
Chemical Abundances of a Sample of Oxygen-dominated Galaxies
![QR code for arXiv:1612.04565 [astro-ph.GA]](http://oss.arxitics.com/images/favicon.svg)