TY - JOUR
T1 - Extended line emission in the BCG of Abell 2390
AU - Alcorn, Leo Y.
AU - Yee, H. K.C.
AU - Drissen, Laurent
AU - Rhea, Carter
AU - Sivanandam, Suresh
AU - Hlavacek-Larrondo, Julie
AU - Hsieh, Bau Ching
AU - Lin, Lihwai
AU - Lin, Yen Ting
AU - Liu, Qing
AU - Muzzin, Adam
AU - Noble, Allison
AU - Pintos-Castro, Irene
N1 - Publisher Copyright:
© 2023 The Author(s).
PY - 2023/6/1
Y1 - 2023/6/1
N2 - We report CFHT/SITELLE imaging Fourier Transform Spectrograph observations of the brightest cluster galaxy (BCG) of galaxy cluster Abell 2390 at z = 0.228. The BCG displays a prominent cone of emission in H α, H β, [N ii], and [O ii] to the North-West with PA = 42°, 4.4 arcsec in length (15.9 kpc), which is associated with elongated and asymmetric Chandra soft X-ray emission. The H α flux map also contains a 'hook' of H α and [N ii] emission resulting in a broadened northern edge to the cone. Using SITELLE/LUCI software, we extract emission line flux, velocity, velocity dispersion, and continuum maps, and utilize them to derive flux ratio maps to determine ionization mechanisms and dynamical information in the BCG's emission line region. The Baldwin-Phillips-Terlevich diagnostics on the BCG cone indicate a composite ionization origin of photoionization due to star formation and shock. Strong LINER-like emission is seen in the nuclear region which hosts an active galactic nucleus (AGN). As Abell 2390 is a cool-core cluster, we suggest that the cooling flow is falling onto the central BCG and interacting with the central AGN. The AGN produces jets that inflate 'bubbles' of plasma in the ICM, as is often observed in local galaxy clusters. Furthermore, combining signs of AGN activities from radio, optical emission line and X-ray data over a large range of physical scale, we find evidence for three possible episodes of AGN activity in different epochs associated with the Abell 2390 BCG.
AB - We report CFHT/SITELLE imaging Fourier Transform Spectrograph observations of the brightest cluster galaxy (BCG) of galaxy cluster Abell 2390 at z = 0.228. The BCG displays a prominent cone of emission in H α, H β, [N ii], and [O ii] to the North-West with PA = 42°, 4.4 arcsec in length (15.9 kpc), which is associated with elongated and asymmetric Chandra soft X-ray emission. The H α flux map also contains a 'hook' of H α and [N ii] emission resulting in a broadened northern edge to the cone. Using SITELLE/LUCI software, we extract emission line flux, velocity, velocity dispersion, and continuum maps, and utilize them to derive flux ratio maps to determine ionization mechanisms and dynamical information in the BCG's emission line region. The Baldwin-Phillips-Terlevich diagnostics on the BCG cone indicate a composite ionization origin of photoionization due to star formation and shock. Strong LINER-like emission is seen in the nuclear region which hosts an active galactic nucleus (AGN). As Abell 2390 is a cool-core cluster, we suggest that the cooling flow is falling onto the central BCG and interacting with the central AGN. The AGN produces jets that inflate 'bubbles' of plasma in the ICM, as is often observed in local galaxy clusters. Furthermore, combining signs of AGN activities from radio, optical emission line and X-ray data over a large range of physical scale, we find evidence for three possible episodes of AGN activity in different epochs associated with the Abell 2390 BCG.
KW - galaxies: clusters: Abell 2390
KW - galaxies: elliptical and lenticular, cD
KW - galaxies: individual: J21536+1741
UR - http://www.scopus.com/inward/record.url?scp=85160945799&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85160945799&partnerID=8YFLogxK
U2 - 10.1093/mnras/stad948
DO - 10.1093/mnras/stad948
M3 - Article
AN - SCOPUS:85160945799
SN - 0035-8711
VL - 522
SP - 1521
EP - 1534
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -