Ionised AGN outflows in the Goldfish galaxy – The illuminating and interacting red quasar eFEDSJ091157.4+014327 at z 0.6
arxiv(2024)
摘要
Evolutionary models suggest that the initial growth phases of active galactic
nuclei (AGN) are dust-enshrouded, and characterized by jet/wind outflows that
should gradually clear the interstellar medium (ISM) in the host by heating
and/or expelling the surrounding gas. eFEDSJ091157.4+014327 (z 0.6) was
selected from X-ray samples for its characteristics that are similar to sources
with outflows which include red, obscured (2.7x10^22 cm^-2 ) and X-ray
luminous (6.5x10^44 erg s^-1). We aim to explore the environment around
the red quasar and characterise kinematics within the system. We use spatially
resolved spectroscopic data from Multi Unit Spectroscopic Explorer (MUSE) with
an average seeing of 0.6" to construct flux, velocity and velocity dispersions
maps. We found that the quasar is embedded in an interacting and merging system
with three other galaxies 50 kpc from its nucleus. Spatially resolved
kinematics reveal that the quasar has extended ionised outflows of up to 9.4
kpc with positive and negative velocities up to 1000 km s^-1 and -1200 km
s^-1, respectively. The velocity dispersion (W_80) ranges from 600-1800
km s^-1. We associate the presence of turbulent and high-velocity
components with the outflow. The total mass outflow rate is estimated to be 9.6
M_⊙ yr^-1 and kinetic power of 1.9x10^42 erg s^-1.
Considering different recipes of velocity and AGN bolometric luminosities, the
kinetic coupling efficiencies range from 0.01
from 0.04-0.5. The kinetic coupling efficiency values are low which indicates
that the outflow is not very significant from the energetic point of view but
is slightly consistent with theoretical predictions of
radiation-pressure-driven outflows. The mass loading factor of 4.8 is an
indication that these outflows are more likely AGN-driven than star
formation-driven.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要