论文标题
检测周围热尘埃刺激的超露水星系W0410-0913周围的伴侣星系
Detection of companion galaxies around hot dust-obscured hyper-luminous galaxy W0410-0913
论文作者
论文摘要
星系和类星体之间的相变经常与罕见的多发粉尘的星系中罕见的人群一起识别。星系形成模型预测这些系统将通过合并生长，这些系统可以向其中心提供大量气体，从而引起恒星形成的强烈爆发，并喂养其超级质量的黑洞。在这里，我们报告使用非常大的望远镜观测值，在红移z = 3.631处，在高光粉尘的星系W0410-0913上发现了24个星系，该星系在预计的物理尺度上发射了莱曼 - 阿尔法发射，该物理尺度约为400 kpc。尽管这表明W0410-0913在非常密集的环境中发展，但我们没有发现可以维持其增长的合并迹象。数据表明，如果正如模型所预期的那样，这些合并将涉及较少的卫星，并且仅对W0410-0913的内部星际介质产生适度的影响，这是由于旋转快速旋转的快速旋转的分子磁盘所维持的，正如ATACAMA大型米计阵列的表明所暗示的那样。
The phase transition between galaxies and quasars is often identified with the rare population of hyper-luminous, hot dust-obscured galaxies. Galaxy formation models predict these systems to grow via mergers, that can deliver large amounts of gas toward their centers, induce intense bursts of star formation and feed their supermassive black holes. Here we report the detection of 24 galaxies emitting Lyman-alpha emission on projected physical scales of about 400 kpc around the hyper-luminous hot dust-obscured galaxy W0410-0913, at redshift z = 3.631, using Very Large Telescope observations. While this indicates that W0410-0913 evolves in a very dense environment, we do not find clear signs of mergers that could sustain its growth. Data suggest that if mergers occurred, as models expect, these would involve less massive satellites, with only a moderate impact on the internal interstellar medium of W0410-0913, which is sustained by a rotationally-supported fast-rotating molecular disk, as Atacama Large Millimeter Array observations suggest.
