一个观察者的视角
Barred Galaxies: an Observer's Perspective
摘要：
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，我显示了详细的结构分析的结果？300棒星系在斯隆数字巡天，提供物理量，如酒吧的长度，椭圆度和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。我还展示了相关性，表明条状物随着动态年龄而变得更长、更薄、更强，并且条状物和凸起的生长是相关的。最后，我简要地讨论了开放的问题和未来研究的可能方向。
英文摘要：
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.
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。
