Violent interaction between the active galactic nucleus and the hot gas in the core of the galaxy cluster Sérsic 159−03

AbstractXDCPJ0044.0-2033 is one of the most massive galaxy cluster at z ∼1.6, for which a wealth of multi-wavelength photometric and spectroscopic data have been collected during the last years. I have reported on the properties of the galaxy members in the very central region (∼ 70kpc × 70kpc) of the cluster, derived through deep HST photometry, SINFONI and KMOS IFU spectroscopy, together with Chandra X-ray, ALMA and JVLA radio data.In the core of the cluster, we have identified two groups of galaxies (Complex A and Complex B), seven of them confirmed to be cluster members, with signatures of ongoing merging. These galaxies show perturbed morphologies and, three of them show signs of AGN activity. In particular, two of them, located at the center of each complex, have been found to host luminous, obscured and highly accreting AGN (λ = 0.4−0.6) exhibiting broad Hα line. Moreover, a third optically obscured type-2 AGN, has been discovered through BPT diagram in Complex A. The AGN at the center of Complex B is detected in X-ray while the other two, and their companions, are spatially related to radio emission. The three AGN provide one of the closest AGN triple at z > 1 revealed so far with a minimum (maximum) projected distance of 10 kpc (40 kpc). The discovery of multiple AGN activity in a highly star-forming region associated to the crowded core of a galaxy cluster at z ∼ 1.6, suggests that these processes have a key role in shaping the nascent Brightest Cluster Galaxy, observed at the center of local clusters. According to our data, all galaxies in the core of XDCPJ0044.0-2033 could form a BCG of M* ∼ 1012Mȯ hosting a BH of 2 × 108−109Mȯ, in a time scale of the order of 2.5 Gyrs.

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Radio and X-ray Observations of the Restarted Radio Galaxy in the Galaxy Cluster CL 0838+1948

Galaxies ◽

10.3390/galaxies9040108 ◽

2021 ◽

Vol 9 (4) ◽

pp. 108

Author(s):

Simona Giacintucci ◽

Tracy Clarke ◽

Namir E. Kassim ◽

Wendy Peters ◽

Emil Polisensky

Keyword(s):

Radio Source ◽

Survey Data ◽

Radio Galaxy ◽

Galaxy Cluster ◽

Gas Emission ◽

Low Frequencies ◽

Nuclear Activity ◽

X Ray ◽

Hot Gas ◽

The Galaxy

We present VLA Low-band Ionosphere and Transient Experiment (VLITE) 338 MHz observations of the galaxy cluster CL 0838+1948. We combine the VLITE data with Giant Metrewave Radio Telescope 610 MHz observations and survey data. The central galaxy hosts a 250 kpc source whose emission is dominated by two large lobes at low frequencies. At higher frequencies, a pair of smaller lobes (∼30 kpc) is detected within the galaxy optical envelope. The observed morphology is consistent with a restarted radio galaxy. The outer lobes have a spectral index αout=1.6, indicating that they are old, whereas the inner lobes have αinn=0.6, typical for an active source. Spectral modeling confirms that the outer emission is a dying source whose nuclear activity switched off not more than 110 Myr ago. Using archival Chandra X-ray data, we compare the radio and hot gas emission. We find that the active radio source is contained within the innermost and X-ray brightest region, possibly a galactic corona. Alternatively, it could be the remnant of a larger cool core whose outer layers have been heated by the former epoch of activity that has generated the outer lobes.

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Molecular accretion in the core of the galaxy cluster 2A 0335+096

Monthly Notices of the Royal Astronomical Society ◽

10.1111/j.1365-2966.2011.19180.x ◽

2011 ◽

Vol 416 (3) ◽

pp. 2060-2067 ◽

Cited By ~ 12

Author(s):

R. J. Wilman ◽

A. C. Edge ◽

P. J. McGregor ◽

B. R. McNamara

Keyword(s):

Galaxy Cluster ◽

The Core ◽

The Galaxy

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Extraplanar gas and magnetic fields in the cluster spiral galaxy NGC 4569

Proceedings of the International Astronomical Union ◽

10.1017/s174392130700258x ◽

2006 ◽

Vol 2 (S237) ◽

pp. 470-470

Author(s):

S. Ryś ◽

K. T. Chyży ◽

M. Weżgowiec ◽

M. Ehle ◽

R. Beck

Keyword(s):

Magnetic Fields ◽

Galaxy Evolution ◽

Spiral Galaxy ◽

Virgo Cluster ◽

X Ray ◽

Gas Phases ◽

Hot Gas ◽

The Core ◽

The Galaxy ◽

Galaxy Disk

AbstractThe Virgo Cluster spiral NGC 4569 is known for its compact starburst in the core and unusual outflow of Hα emitting gas perpendicular to the galaxy disk. Recent radio polarimetric observations with the Effelsberg telescope reveal huge magnetized outflows. Preliminary results of our XMM-Newton observations uncover not only hot gas in the disk but also an extensive X-ray envelope around it. We investigate the possibility of starburst-induced galactic outflows in various gas phases and cluster influence on the galaxy evolution.

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Chimneys in the starburst galaxy M 82

Symposium - International Astronomical Union ◽

10.1017/s0074180900206748 ◽

1999 ◽

Vol 193 ◽

pp. 752-753

Author(s):

Matt P. Redman ◽

K. A. Wills ◽

T.W.B. Muxlow ◽

A. Pedlar

Keyword(s):

Theoretical Models ◽

Starburst Galaxy ◽

Radio Image ◽

Ionized Gas ◽

Hot Gas ◽

The Core ◽

New Radio ◽

The Galaxy

A new radio image of the core of the starburst galaxy M82 is presented. A pair of probable galactic chimneys are evident. Such structures have been conjectured to result when a giant shell of ionized gas breaks out of the dense plane of a galaxy and ejects hot gas into the halo. In M 82, the starburst activity drives a galactic superwind and theoretical models of this process require a knowledge of the kinematics of the hot gas in the core of the galaxy. The results presented here imply that the ejection of material into the base of the superwind does not occur smoothly over the starburst region; instead, very localised venting of the hot gas appears to be taking place.

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Trouble for AGN Feedback? The Puzzle of the Core of the Galaxy Cluster AWM 4

The Astrophysical Journal ◽

10.1086/527472 ◽

2008 ◽

Vol 673 (1) ◽

pp. L17-L20 ◽

Cited By ~ 12

Author(s):

Fabio Gastaldello ◽

David A. Buote ◽

Fabrizio Brighenti ◽

William G. Mathews

Keyword(s):

Galaxy Cluster ◽

The Core ◽

The Galaxy

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A near-infrared study of the obscured 3C129 galaxy cluster

Astronomy and Astrophysics ◽

10.1051/0004-6361/202038342 ◽

2020 ◽

Vol 644 ◽

pp. A107

Author(s):

M. Ramatsoku ◽

M. A. W. Verheijen ◽

R. C. Kraan-Korteweg ◽

T. H. Jarrett ◽

K. Said ◽

...

Keyword(s):

Near Infrared ◽

Galactic Plane ◽

Galaxy Cluster ◽

Imaging Data ◽

Infrared Study ◽

X Ray ◽

Cluster Galaxies ◽

The Core ◽

Main Cluster ◽

The Galaxy

We present a catalogue of 261 new infrared selected members of the 3C 129 galaxy cluster. The cluster, located at z ≈ 0.02, forms part of the Perseus-Pisces filament and is obscured at optical wavelengths due to its location in the zone of avoidance. We identified these galaxies using the J- and K-band imaging data provided by the UKIDSS Galactic Plane Survey within an area with a radius of 1.1° centred on the X-ray emission of the cluster at ℓ, b ≈ 160.52° ,0.27°. A total of 26 of the identified galaxy members have known redshifts 24 of which are from our 2016 Westerbork H I survey and two are from optical spectroscopy. An analysis of the galaxy density at the core of the 3C 129 cluster shows it to be less dense than the Coma and Norma clusters, but comparable to the galaxy density in the core of the Perseus cluster. From an assessment of the spatial and velocity distributions of the 3C 129 cluster galaxies that have redshifts, we derived a velocity of cz = 5227 ± 171 km s−1 and σ = 1097 ± 252 km s−1 for the main cluster, with a substructure in the cluster outskirts at cz = 6923 ± 71 km s−1 with σ = 422 ± 100 km s−1. The presence of this substructure is consistent with previous claims based on the X-ray analysis that the cluster is not yet virialised and may have undergone a recent merger.

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