arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1809.09568astro-ph.GAastro-ph.CO
收藏

(原)团环境中$z=0.4-2.6$射电星系中的分子气体

Molecular gas in radio galaxies at $z=0.4-2.6$ in (proto-)cluster environment

G. Castignani, F. Combes, P. Salomè, C. Benoist, M. Chiaberge, J. Freundlich, G. De Zotti

摘要:

我们调查的作用,在处理射电星系(RGs)的分子气体的环境。我们用IRAM-30 m望远镜在$z=0.4-2.6$观测到了5个在百万pc尺度密集环境下的类星体。我们设置了四个上限,并报告了一个试探性的CO(7 $\rightarrow$ 6)检测COSMOS-FRI 70在$z=2.63$,这是最遥远的最明亮的星系团星系(BCG)候选人检测CO。我们推测,集群环境可能发挥了作用,防止加油通过环境机制,如星系骚扰,扼杀,冲压压力,或潮汐剥离。这项工作的RG是ALMA以及詹姆斯韦伯太空望远镜等下一代望远镜的绝佳目标。

英文摘要:

We investigate the role of the environment in processing molecular gas in radio galaxies (RGs). We observed five RGs at $z=0.4-2.6$ in dense Mpc-scale environment with the IRAM-30m telescope. We set four upper-limits and report a tentative CO(7$\rightarrow$6) detection for COSMOS-FRI 70 at $z=2.63$, which is the most distant brightest cluster galaxy (BCG) candidate detected in CO. We speculate that the cluster environment might have played a role in preventing the refueling via environmental mechanisms such as galaxy harassment, strangulation, ram-pressure, or tidal stripping. The RGs of this work are excellent targets for ALMA as well as next generation telescopes such as the James Webb Space Telescope.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑