论文标题
爱尔兰的运气？由分子气桥连接的叶绿叶的同伴
Luck of the Irish? A companion of the Cloverleaf connected by a bridge of molecular gas
论文作者
论文摘要
我们从$ z = 2.56 $中对CO（3-2）的CO（3-2）进行了深入的观察。我们发现，与三叶草宿主银河系的预计距离为33 kpc的大量伴侣的较小量减少了4-5倍。星系是通过CO发射桥连接的，表明它们正在相互作用，并且伴侣正在被叶绿叶剥离。我们还发现了在叶绿叶的光谱线中快速分子气的证据，这可能是恒星或类星体反馈引起的流出。所有这些特征在类星体中可能无处不在，只有在重力镜头和数据敏感性的帮助下才检测到。总体而言，这些发现与预测富含气体合并的星系形成方案一致，在类星体触发，Starburst触发和紧凑球体的形成中起着关键作用。
We present deep observations of CO(3-2) from the Cloverleaf lensed quasar-starburst at $z=2.56$. We discover a 4-5 times less massive companion at a projected distance of 33 kpc from the Cloverleaf host galaxy. The galaxies are connected by a bridge of CO emission, indicating that they are interacting and that the companion is being stripped by the Cloverleaf. We also find evidence for fast molecular gas in the spectral line of the Cloverleaf that may be an outflow induced by stellar or quasar feedback. All of these features may be ubiquitous among quasars and only detected here with the help of gravitational lensing and the sensitivity of the data. Overall, these findings agree with galaxy formation scenarios that predict gas-rich mergers play a key role in quasar triggering, starburst triggering and the formation of compact spheroids.
