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arXiv 0704.2288astro-ph
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Seyfert星系环核区恒星形成的抑制

Suppressed star formation in circumnuclear regions in Seyfert galaxies

J. -M. Wang, Y. -M. Chen, C. -S. Yan, C. Hu, W. -H. Bian

摘要:

黑洞活动的反馈被广泛认为在调节恒星形成和黑洞生长方面起着关键作用。活动星系核(AGN)中的恒星形成与超大质量黑洞的形成之间的关系是一个长期存在的问题。我们编译了57个塞弗特星系的样本来解决这个问题。我们估计气体的表面密度和恒星形成率在环核区域(CNRs)。与著名的Kennicutt-Schmidt(K-S)定律相比,我们发现在这个样本中,大多数Seyfert星系CNR中的恒星形成率都被抑制了。反馈建议解释抑制恒星形成率。

英文摘要:

Feedback from black hole activity is widely believed to play a key role in regulating star formation and black hole growth. A long-standing issue is the relation between the star formation and fueling the supermassive black holes in active galactic nuclei (AGNs). We compile a sample of 57 Seyfert galaxies to tackle this issue. We estimate the surface densities of gas and star formation rates in circumnuclear regions (CNRs). Comparing with the well-known Kennicutt-Schmidt (K-S) law, we find that the star formation rates in CNRs of most Seyfert galaxies are suppressed in this sample. Feedback is suggested to explain the suppressed star formation rates.

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