HI absorption associated with Norma's brightest cluster galaxy

Abstract

ESO 137-G006 is the brightest cluster galaxy (BCG) of the cool-core and dynamically young Norma cluster. We discover an atomic hydrogen (HI) absorption line associated with this BCG using the Australia Telescope Compact Array. We estimate a gas column density of $\approx (1.3\pm 0.2)\times 10^{20}{T}_{\mathrm{spin}}$ atoms cm${}^{-2}$ with spin temperature, $T_{\mathrm{spin}}\le 194$ K, consistent with the HI properties of other early-type galaxies and cool-core cluster BCGs. The relationship between the presence of cold gas and a cluster cooling flow is unclear. Our results support the scenario that ESO 137-G006 may be a recent arrival to the cluster centre and not the original BCG. This scenario is consistent with the observed spatial alignment of the BCG's wide-angle tail radio lobes with Norma's X-ray sub-cluster and the significant line-of-sight velocity offset between the mean velocity of Norma and that of the BCG.

arXiv commentAccepted for publication in MNRAS. 10 pages, 3 figures (additional 4 pages, 3 figures in appendix)

References in corpus (66)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The 1000 Brightest HIPASS Galaxies: HI Properties
• The Atlas3D project -- XIII. Mass and morphology of HI in early-type galaxies as a function of environment
• xGASS: Total cold gas scaling relations and molecular-to-atomic gas ratios of galaxies in the local Universe
• The Australia Telescope Compact Array Broadband Backend (CABB)
• Fast neutral outflows in powerful radio galaxies: a major source of feedback in massive galaxies
• The Origin of the Brightest Cluster Galaxies
• Neutral hydrogen in nearby elliptical and lenticular galaxies: the continuing formation of early-type galaxies
• Compact steep-spectrum and peaked-spectrum radio sources
• WALLABY -- An SKA Pathfinder HI Survey
• The cold interstellar medium of galaxies in the Local Universe
• Relativistic Jets and the Fanaroff-Riley Classification of Radio Galaxies
• VLA HI imaging of the brightest spiral galaxies in Coma
• AGN heating and ICM cooling in the HIFLUGCS sample of galaxy clusters
• Every BCG with a strong radio AGN has an X-ray cool core: is the cool core - noncool core dichotomy too simple?
• Spectacular X-ray tails, intracluster star formation and ULXs in A3627
• Intracluster light and the extended stellar envelopes of cD galaxies: An analytical description
• Early-type galaxies in different environments: an HI view
• X-ray thermal coronae of galaxies in hot clusters -- ubiquity of embedded mini cooling cores
• Probing radio source environments via HI and OH absorption
• HI absorption in radio galaxies: effect of orientation or interstellar medium?
• Tracing HI Beyond the Local Universe
• The dynamical state of brightest cluster galaxies and the formation of clusters
• Galaxy and Mass Assembly (GAMA): Exploring the WISE Cosmic Web in G12
• The HI absorption "Zoo"
• The interstellar and circumnuclear medium of active nuclei traced by HI 21-cm absorption
• A search for HI absorption in nearby radio galaxies using HIPASS
• Centaurus A: morphology and kinematics of the atomic hydrogen
• The MASSIVE survey - XI. What drives the molecular gas properties of early-type galaxies
• Discovery of HI gas in a young radio galaxy at $z=0.44$ using the Australian Square Kilometre Array Pathfinder
• Collimated synchrotron threads linking the radio lobes of ESO137-006
• A survey for redshifted molecular and atomic absorption lines I
• The Norma Cluster (ACO 3627): I. A Dynamical Analysis of the Most Massive Cluster in the Great Attractor
• The origin of wide-angle tailed radio galaxies
• HI Absorption Toward the Nucleus of the Radio Galaxy PKS 2322-123 in A 2597
• Abell 3627: A Nearby, X-ray Bright, and Massive Galaxy Cluster
• The Rarity of Star Formation in Brightest Cluster Galaxies as Measured by WISE
• HI 21-cm absorption and unified schemes of active galactic nuclei
• The Relation Between Line Emission and Brightest Cluster Galaxies in Three Exceptional Clusters: Evidence for Gas Cooling from the ICM
• Using 21cm Absorption in Small Impact Parameter Galaxy-QSO Pairs to Probe Low-Redshift Damped and Sub-Damped Lyman-alpha System
• Enormous disc of cool gas surrounding the nearby powerful radio galaxy NGC 612 (PKS 0131-36)
• Probing the gas content of radio galaxies through HI absorption stacking
• ALMA observations of AGN fuelling: the case of PKS B1718-649
• The First Large Absorption Survey in HI (FLASH): I. Science Goals and Survey Design
• H I content in Coma cluster substructure
• Associated 21-cm absorption towards the cores of radio galaxies
• Brightest Cluster Galaxies: the centre can(not?) hold
• The peculiar radio galaxy 4C 35.06: a case for recurrent AGN activity?
• GASP XXV: Neutral Hydrogen gas in the striking Jellyfish Galaxy JO204
• Blind HI and OH absorption line search: first results with MALS and uGMRT processed using ARTIP
• A Search for Intrinsic HI 21 cm and OH 18 cm Absorption Toward Compact Radio Sources
• GPS/CSS radio sources and their relation to other AGN
• Constraints on Feedback in the local Universe: The relation between star formation and AGN activity in early type galaxies
• HI emission and absorption in nearby, gas-rich galaxies II. -- sample completion and detection of intervening absorption in NGC 5156
• Connecting X-ray absorption and 21cm neutral hydrogen absorption in obscured radio AGN
• Wide-Field Imaging and Polarimetry for the Biggest and Brightest in the 20GHz Southern Sky
• Multiwavelength investigations of co-evolution of bright custer galaxies
• Using 21-cm absorption surveys to measure the average HI spin temperature in distant galaxies
• HI absorption in nearby compact radio galaxies
• ASCA Observations of a Nearby and Massive Galaxy Cluster, Abell 3627
• Parkes HI observations of galaxies behind the southern Milky Way. II. The Crux and Great Attractor regions (l ~ 289 degree to 338 degree)
• A statistical measurement of the HI spin temperature in DLAs at cosmological distances
• HI absorption at z~0.7 against the lobe of the powerful radio galaxy PKS 0409-75
• Global VLBI Observations of the High Velocity HI Absorption Toward NGC 1275
• A relation between circumnuclear HI, dust, and optical cores in low-power radio galaxies
• Tracing X-ray and HI absorption in peaked spectrum sources

Cited by in corpus (1)

• The FAST HI 21-cm absorption blind survey. II. -- Statistic Exploration for Associated and Intervening systems