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arXiv 0709.0455astro-ph
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关于早型星系核的起源

On the Origin of Early-type Galaxies Nuclei

R. Capuzzo-Dolcetta, P. Miocchi

摘要:

Cote及其合作者对ACS室女星系团的巡天观测显示,在许多早型星系的光心处存在致密的核。有人认为,它们是在明亮星系中探测到的超大质量黑洞(SBH)的核的低质量对应物。如果这个观点是正确的,那么我们应该从中心大质量天体的角度来考虑,无论是SBH还是致密星团(CSC),它们伴随着几乎所有早期类型星系的形成。在这一观测框架下,星系核可能是球状星团在动力学摩擦作用下被推向星系中心并在那里合并的假说得到了令人兴奋的可能性证实。在这篇简短的论文中,我们报告了我们最近的结果球状星团合并获得的详细的N体模拟。

英文摘要:

The ACS Virgo cluster survey by Cote' and collaborators shows the presence of compact nuclei at the photocenters of many early-type galaxies. It is argued that they are the low-mass counterparts of nuclei hosting Super Massive Black Holes (SBHs) detected in the bright galaxies. If this view is correct, then one should think in terms of central massive objects, either SBHs or Compact Stellar Clusters (CSCs), that accompany the formation of almost all early-type galaxies. In this observational frame, the hypothesis that galactic nuclei may be the remains of globular clusters driven inward to the galactic center by dynamical friction and there merged, finds an exciting possible confirm. In this short paper we report of our recent results on globular cluster mergers obtained by mean of detailed N-body simulations.

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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