Dynamical evolution of compact groups of galaxies

致密星系群的动力学演化

• 批准号: 42430776
• 负责人: Professor Dr. Bodo L. Ziegler
• 金额: --
• 依托单位: Institut für Astrophysik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/42430776?language=en
• 关键词: Dynamical; evolution; compact; groups; galaxies

We propose to study the nature of compact groups of galaxies, investigating their formation and dynamical evolution in an unprecedented manner. For the first time, a joint analysis of three components in Hickson compact groups will be performed: We examine the optical intragroup light that permeates most of those systems, the globular clusters systems hosted by the member galaxies and the galaxies themselves and investigate correlated properties. The intragroup light, formed by stripped stellar material dispersed in the gravitational potential, is revealed in wide-field images with high accuracy by a new technique that we developed based on wavelet transforms. The globular cluster systems associated to the group galaxies, as well as other populations (dwarfs, planetary nebulae) that work as probe particles are studied using images and spectroscopy from 8m class telescopes. All these systems and their properties, which may be affected by galaxy interaction processes, are compared to isolated galaxies. That way, we obtain a coherent picture of compact groups from supplementary features that allows us to establish strong constraints to models of formation and evolution of the groups as well as of cosmic structure build-up in general.

我们建议研究致密星系群的性质，以前所未有的方式调查它们的形成和动力学演化。这是第一次，在希克森紧凑组的三个组成部分的联合分析将进行：我们检查的光学组内光，渗透到大多数这些系统，球状星团系统的成员星系和星系本身的主机和调查相关的属性。群内光，形成剥离恒星物质分散在引力势，揭示了在宽视场图像具有高精度的一种新技术，我们开发的基础上小波变换。与星系群相关的球状星团系统，以及作为探测粒子的其他种群（矮星，行星状星云），使用8m级望远镜的图像和光谱进行研究。所有这些系统和它们的属性，这可能会受到星系相互作用过程的影响，比较孤立的星系。这样，我们从补充特征中获得了紧凑群的连贯图像，使我们能够对群的形成和演化以及一般宇宙结构的建立模型建立强有力的约束。

项目成果

Intragroup diffuse light in compact groups of galaxies – II. HCG 15, 35 and 51

致密星系群中的群内漫射光 â II HCG 15、35 和 51

• DOI: 10.1111/j.1365-2966.2008.13500.x
• 发表时间: 2008
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Da Rocha;Ziegler;B. L. ;Mendes de Oliveira
• 通讯作者: Mendes de Oliveira