论文标题
黑洞积聚与附近的1型发光星系中的恒星形成速率和恒星形成效率相关
Black Hole Accretion Correlates with Star Formation Rate and Star Formation Efficiency in Nearby Luminous Type 1 Active Galaxies
论文作者
论文摘要
我们研究了453 $ z \ of的样品中黑洞积聚与恒星形成之间的关系，大约1.3 $ 1型活性银河核（AGNS）。我们使用可用的CO观察结果来证明，即使对于1型AGN型的宿主星系，Nebular粉尘灭绝和金属性的组合也可以提供可靠的分子气体质量估计值。与其他类似但明显较小的样品一致，我们重申了这样的观念，即强大的AGN具有可比的气体含量与附近的星形星系，并且AGN反馈不会立即耗尽冷气宿主。我们证明，尽管恒星形成速率和黑洞积聚率之间的强相关性部分是由于这些参数对分子气体质量的相互依赖性驱动，但在去除恒星形成速率对分子气体量的依赖性后，恒星形成速率和黑洞积聚速率仍然弱相关。这是恒星形成效率和黑洞积聚率之间的正相关性，可以解释为AGN反馈正反馈的证据。
We investigate the relationship between black hole accretion and star formation in a sample of 453 $z\approx0.3$ type 1 active galactic nuclei (AGNs). We use available CO observations to demonstrate that the combination of nebular dust extinction and metallicity provides reliable estimates of the molecular gas mass even for the host galaxies of type 1 AGNs. Consistent with other similar but significantly smaller samples, we reaffirm the notion that powerful AGNs have comparable gas content as nearby star-forming galaxies and that AGN feedback does not deplete the host of cold gas instantaneously. We demonstrate that while the strong correlation between star formation rate and black hole accretion rate is in part driven by the mutual dependence of these parameters on molecular gas mass, the star formation rate and black hole accretion rate are still weakly correlated after removing the dependence of star formation rate on molecular gas mass. This, together with a positive correlation between star formation efficiency and black hole accretion rate, may be interpreted as evidence for positive AGN feedback.
