The Distribution and Condition of the Warm Molecular Gas in Abell 2597 and Sersic 159-03
arXiv:1002.3297 · doi:10.1111/j.1365-2966.2010.16535.x
Abstract
We have used the SINFONI integral field spectrograph to map the near-infrared K-band emission lines of molecular and ionised hydrogen in the central regions of two cool core galaxy clusters, Abell 2597 and Sersic 159-03. Gas is detected out to 20 kpc from the nuclei of the brightest cluster galaxies and found to be distributed in clumps and filaments around it. The ionised and molecular gas phases trace each other closely in extent and dynamical state. Both gas phases show signs of interaction with the active nucleus. Within the nuclear regions the kinetic luminosity of this gas is found to be somewhat smaller than the current radio luminosity. Outside the nuclear region the gas has a low velocity dispersion and shows smooth velocity gradients. There is no strong correlation between the intensity of the molecular and ionised gas emission and either the radio or X-ray emission. The molecular gas in Abell 2597 and Sersic 159-03 is well described by a gas in local thermal equilibrium (LTE) with a single excitation temperature T_exc ~ 2300 K. The emission line ratios do not vary strongly as function of position, with the exception of the nuclear regions where the ionised to molecular gas ratio is found decrease. These constant line ratios imply a single source of heating and excitation for both gas phases.
44 pages, 32 figures, accepted for publication in MNRAS
References in corpus (15)
- An Infrared Survey of Brightest Cluster Galaxies. II: Why are Some Brightest Cluster Galaxies Forming Stars?
- Investigating AGN Heating in a Sample of Nearby Clusters
- Interactions of a Light Hypersonic Jet with a Non-Uniform Interstellar Medium
- Magnetic support of the optical emission line filaments in NGC 1275
- Collisional heating as the origin of filament emission in galaxy clusters
- Feeding versus Feedback in NGC 4151 probed with Gemini NIFS. I. Excitation
- The central parsecs of Centaurus A: High Excitation Gas, a Molecular Disk, and the Mass of the Black Hole
- H2 formation and excitation in the Stephan's Quintet galaxy-wide collision
- An infrared survey of brightest cluster galaxies: Paper I
- Discovery of atomic and molecular mid infra-red emission lines in off-nuclear regions of NGC 1275 and NGC 4696 with the Spitzer Space Telescope
- Ionized nebulae surrounding brightest cluster galaxies
- Giant cavities, cooling and metallicity substructure in Abell 2204
- Integral field spectroscopy of H-alpha emission in cooling flow cluster cores: disturbing the molecular gas reservoir
- Integral field spectroscopy of ionized and molecular gas in cool cluster cores: evidence for cold feedback?
- Fields and Filaments in the Core of the Centaurus Cluster
Cited by in corpus (10)
- On the Origin of the Extended Halpha Filaments in Cooling Flow Clusters
- A Galaxy-Scale Fountain of Cold Molecular Gas Pumped by a Black Hole
- ALMA observations of cold molecular gas filaments trailing rising radio bubbles in PKS0745-191
- Star-Forming Brightest Cluster Galaxies at 0.25 < z < 1.25: A Transitioning Fuel Supply
- The nature of filamentary cold gas in the core of the Virgo Cluster
- Molecular Gas Along a Bright H-alpha Filament in 2A 0335+096 Revealed by ALMA
- Feedback in the cores of clusters Abell 3581, 2A 0335+096, and Sersic 159-03
- Revealing a Highly-Dynamic Cluster Core in Abell 1664 with Chandra
- The Star-Forming Interstellar Medium of Lyman Break Galaxy Analogs
- Extended, Dusty Star Formation Fueled by a Residual Cooling Flow in the Cluster of Galaxies Sersic 159-03