arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.0416astro-ph.GA
收藏

Milky Way内部的行星状星云:新的丰度

Planetary nebulae in the inner Milky Way: new abundances

O. Cavichia, R. D. D. Costa, W. J. Maciel

摘要:

对内盘和核球中行星状星云的研究提供了有关He、N、O、Ar、Ne等元素的化学丰度及其演化的重要信息,这些信息与中等质量恒星的演化和银河系的化学演化有关。我们提出了准确的丰度元素的He,N,S,O,Ar,和Ne的样本的54个行星状星云位于朝向凸起的银河系,其中33个的丰度推导的第一次。丰度是根据国家天体物理实验室(LNA,巴西)在光学领域的观测得出的。数据显示出良好的协议与文献中的其他结果,在这个意义上说,丰度的分布是类似的那些作品。

英文摘要:

The study of planetary nebulae in the inner-disk and bulge gives important information on the chemical abundances of elements such as He, N, O, Ar, Ne, and on the evolution of these abundances, which is associated with the evolution of intermediate-mass stars and the chemical evolution of the Galaxy. We present accurate abundances of the elements He, N, S, O, Ar, and Ne for a sample of 54 planetary nebulae located towards the bulge of the Galaxy, for which 33 have the abundances derived for the first time. The abundances are derived based on observations in the optical domain made at the National Laboratory for Astrophysics (LNA, Brazil). The data show a good agreement with other results in the literature, in the sense that the distribution of the abundances is similar to those works.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑