星云：化学丰度与丰度梯度
天体物理学
2016-01-27 v1
摘要
本文综述了最近一些关于星际星云化学丰度确定的最新成果与问题，特别关注盘状和盘心天体的丰度问题。
引用
@article{arxiv.astro-ph/9911090,
title = {Planetary nebulae: abundances and abundance gradients},
author = {W. J. Maciel},
journal= {arXiv preprint arXiv:astro-ph/9911090},
year = {2016}
}
备注
11 pages, 4 postscript figures, Latex, uses Kluwer style crckapb.sty and psfig.sty, to be published in Chemical evolution of the Milky Way: stars versus clusters, edited by F. Giovannelli, F. Matteucci, Kluwer, also available at http://www.iagusp.usp.br/~maciel/index.html