The transition from galaxy-wide gas inflow to outflow in quasar host galaxies

扫码查看

原文链接

万方数据

外文标题：The transition from galaxy-wide gas inflow to outflow in quasar host galaxies

外文摘要：Galactic-scale outflows driven by active galactic nuclei(AGNs)represent a commonly invoked feedback mechanism within galaxy evolution models.However,the interactions among interstellar gas on galactic scales,the propagation of AGN outflows,and the fundamental parameters of AGNs during their evolutionary processes remain poorly understood.Notably,powerful nu-clear outflows are typically associated with the early stages of AGN activity,which are characterized by high accretion rates and weak narrow emission lines.In our analysis of a sample of quasars hosting Mgn narrow absorption lines(NALs)obtained from the Sloan Digital Sky Survey,we identify a previously unobserved phenomenon wherein galaxy-scale inflow transitions to outflow dominance,concurrent with a notable increase in the strength of the narrow[O Ⅲ]line,achieving a confidence level of 6.7σ.This indicates that while nuclear outflows diminish,galaxy-wide outflows intensify as AGNs evolve.These findings suggest that early-stage outflows interact with the interstellar medium on a galactic scale,thereby facilitating a gradual transition to galaxy-wide outflows.This provides observational support for the hypothetical multi-stage propagation of AGN outflows that globally regulates galaxy evolution.

外文关键词：

active galactic nucleiquasargalaxy windsgalaxy evolutionfeedback

作者：

Zhicheng He、Zhifu Chen、Guilin Liu、Tinggui Wang、Luis C.Ho、Junxian Wang、Weihao Bian、Zheng Cai、Guobin Mou、Qiusheng Gu、Zhiwen Wang

展开 >

作者单位：

CAS Key Laboratory for Research in Galaxies and Cosmology,Department of Astronomy,University of Science and Technology of China,Hefei 230026,China

Department of Physics,Guangxi Minzu University Nanning 530006,China

Kavli Institute for Astronomy and Astrophysics,Peking University,Beijing 100871,China

School of Physics,Nanjing Normal University,Nanjing 210046,China

Department of Astronomy,Tsinghua University,Beijing 100084,China

School of Astronomy and Space Science,Nanjing University,Nanjing 210093,China

展开 >

关键词：

active galactic nuclei quasar galaxy winds galaxy evolution feedback

出版年：

2024

DOI：

10.1007/s11433-024-2475-7

中国科学:物理学力学天文学(英文版)

中国科学院

中国科学:物理学力学天文学(英文版)

CSTPCD

影响因子：0.91

ISSN：1674-7348

年,卷(期)：2024.67(12)

The transition from galaxy-wide gas inflow to outflow in quasar host galaxies

中国科学:物理学 力学 天文学(英文版)

中国科学:物理学力学天文学(英文版)