论文标题
是什么淬灭了巨大的螺旋星系？
What has quenched the massive spiral galaxies?
论文作者
论文摘要
淬灭的巨大螺旋星系最近引起了人们的极大关注，因为更多的数据可限制其环境和冷气含量。但是，淬灭机制仍然不确定，因为它取决于银河系的质量范围和重骨预算。在这封信中，我们报告了罕见人群的识别，这些人群具有非常巨大的，具有恒星质量$ \ gtrsim10^{11} {\ rm〜m_ \ odot} $和halo mass $ $ \ gtrsim10^{13} {13} {\ rm〜m_ m_ m_ m_ m_ \ odot at s $ z的$ z $ s $ z的$ z的$ s $ s $ nighss $ s $ ndighs $ s $ s $ slodhe $ s $ s $ slodhe $ z $ s $ slodhe $ s $ slodhey s $ ss $ slodhey s $ s $ slodhe 0我们使用IRAM-30M望远镜的CO观察表明，这些星系仅包含少量分子气体。在最新的半分析模型和水力动物模拟中也可以看到类似的星系。从这些理论模型中可以发现，这些淬灭的螺旋星系具有巨大的黑洞，这表明中央黑洞的反馈已经淬灭了这些螺旋星系。这种淬火机制似乎挑战了大型黑洞和巨大凸起之间共同发展的流行情况。
Quenched massive spiral galaxies have attracted great attention recently, as more data is available to constrain their environment and cold gas content. However, the quenching mechanism is still uncertain, as it depends on the mass range and baryon budget of the galaxy. In this letter, we report the identification of a rare population of very massive, quenched spiral galaxies with stellar mass $\gtrsim10^{11}{\rm~M_\odot}$ and halo mass $\gtrsim10^{13}{\rm~M_\odot}$ from the Sloan Digital Sky Survey at redshift $z\sim0.1$. Our CO observations using the IRAM-30m telescope show that these galaxies contain only a small amount of molecular gas. Similar galaxies are also seen in the state-of-the-art semi-analytical models and hydro-dynamical simulations. It is found from these theoretical models that these quenched spiral galaxies harbor massive black holes, suggesting that feedback from the central black holes has quenched these spiral galaxies. This quenching mechanism seems to challenge the popular scenario of the co-evolution between massive black holes and massive bulges.
