Barred Galaxies: an Observer’s Perspective

Barred Galaxies: an Observer’s Perspective
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禁止星系:观察者的视角

DOI:
10.1007/978-3-540-75826-6_15
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发表时间:
2007
期刊:
arXiv: Astrophysics
影响因子:
--
通讯作者:
Gadotti
Gadotti
中科院分区:
--
文献类型:
--
作者:
Gadotti

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我回顾了完善的和最近的发现酒吧的属性,和他们的宿主星系,源于光度和光谱观测,并讨论如何理解这些发现可以在酒吧的形成和演变的全球图片,保持与理论发展的连接。特别是,我显示的结果详细的结构分析的300条星系在斯隆数字巡天,提供物理量,如酒吧的长度,椭圆率和boxyness,酒吧总光度比,可以作为一个坚实的基础上,可以建立现实的模型,或比较更基本的理论结果。我还显示相关性,表明酒吧增长更长,更薄,更强的动态年龄,酒吧和凸起的增长是连接的。最后,我简要地讨论了开放的问题和未来研究的可能方向。
I review both well established and more recent findings on the properties of bars, and their host galaxies, stemming from photometric and spectroscopic observations, and discuss how these findings can be understood in terms of a global picture of the formation and evolution of bars, keeping a connection with theoretical developments. In particular, I show the results of a detailed structural analysis of≈ 300 barred galaxies in the Sloan Digital Sky Survey, providing physical quantities, such as bar length, ellipticity and boxyness, and bar-to-total luminosity ratio, that can either be used as a solid basis on which realistic models can be built, or be compared against more fundamental theoretical results. I also show correlations that indicate that bars grow longer, thinner and stronger with dynamical age, and that the growth of bars and bulges is connected. Finally, I briefly discuss open questions and possible directions for future research.
千个星系的多波段条形/核球/盘状图像分解
DOI: --
发表时间: 2006
期刊: Proceedings of the International Astronomical Union
影响因子: --
作者:
D. Gadotti;G. Kauffmann
通讯作者: G. Kauffmann
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DOI: --
发表时间: 1996
期刊:
影响因子: --
作者:
A. Phillips
通讯作者: A. Phillips