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arXiv 0909.0040astro-ph.GAastro-ph.CO
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星团作为星系演化的示踪物

Star clusters as tracers of galaxy evolution

Iraklis S Konstantopoulos

摘要:

星团代表了恒星形成的最常见的“模式”。它们存在于所有类型的环境中,从星系群中级联而下,并通过星爆合并成对星系,形成正常星系和矮星系,甚至是河外空间的孤立区域。由于它们与系统中的整体恒星形成保持着联系,因此它们可以被用作位于距离禁止研究单个恒星的环境中的恒星形成历史的示踪剂。这使得它们非常适合研究星系对和星系群中的合并和相互作用。在这项工作中,我们提出了在本地星暴星系M82,后相互作用的螺旋NGC 6872,合并对和两个紧凑的群体,“斯蒂芬的五重奏”和HCG 7的星团人口的观测。在每一种情况下,我们提取的集群和他们的主机上的信息,主要使用HST测光和双子光谱。

英文摘要:

Star clusters represent the most common 'mode' of star formation. They are found in all types of environments, cascading down from galaxy groups and merging pairs through starbursts to normal galaxies and dwarves and even isolated regions in extragalactic space. As they maintain a link to the overall star formation in a system, they can be used as tracers of the star formation history of environments located at distances prohibitive to the study of individual stars. This makes them ideally suited to the study of mergers and interactions in galaxy pairs and groups. In this work we present observations of the star cluster populations in the local starburst galaxy M82, post-interaction spiral NGC 6872, the "Antennae" merging pair and two compact groups, "Stephan's Quintet" and HCG 7. In each case, we extract information on the clusters and their hosts using mainly HST photometry and Gemini spectroscopy.

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。

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