LoCuSS: A Herschel view of obscured star formation in Abell 1835

Abstract

We present Herschel/PACS, MMT/Hectospec and XMM-Newton observations of Abell 1835, one of the brightest X-ray clusters on the sky, and the host of a strong cool core. Even though Abell 1835 has a prototypically "relaxed" X-ray morphology and no signs of ongoing merger activity in strong- and weak-lensing mass maps, it has a complex velocity distribution, suggesting that it is still accreting significant amounts of mass in the form of smaller satellite systems. Indeed, we find strong dynamical segregation of star-forming dusty galaxies from the optically selected cluster population. Most Herschel sources are found close to the virial radius of the cluster, and almost a third appear to be embedded within a filament feeding the cluster from the SW. We find that the most luminous infrared galaxies are likely involved in galaxy-galaxy interactions that may have triggered the current phase of star formation.

4 pages,5 figures. Accepted for publication in upcoming A&A Herschel Special Issue

References in corpus (8)

• Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy
• The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
• LoCuSS: Comparison of Observed X-ray and Lensing Galaxy Cluster Scaling Relations with Simulations
• A Panoramic Mid-infrared Survey of Two Distant Clusters
• The impact of mergers on relaxed X-ray clusters - III. Effects on compact cool cores
• LoCuSS: Probing Galaxy Transformation Physics with Herschel
• Deep Herschel view of obscured star formation in the Bullet cluster
• Connecting Cluster Substructure in Galaxy Cluster Cores at z=0.2 With Cluster Assembly Histories

Cited by in corpus (24)

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• LoCuSS: Connecting the Dominance and Shape of Brightest Cluster Galaxies with the Assembly History of Massive Clusters
• LoCuSS: A Dynamical Analysis of X-ray AGN in Local Clusters
• The Suppression of Star Formation and the Effect of Galaxy Environment in Low-Redshift Galaxy Groups
• LoCuSS: Pre-processing in galaxy groups falling into massive galaxy clusters at z=0.2
• LoCuSS: The infall of X-ray groups onto massive clusters
• Herschel observations of extended atomic gas in the core of the Perseus cluster
• The Phase Space of z~1.2 SpARCS Clusters: Using Herschel to probe Dust Temperature as a Function of Environment and Accretion History
• Suzaku observations of Abell 1835 outskirts: Deviation from hydrostatic equilibrium
• LoCuSS: Probing Galaxy Transformation Physics with Herschel
• A complete census of Herschel-detected infrared sources within the HST Frontier Fields
• SPITZER observations of Abell 1763. III. The infrared luminosity function in different supercluster environments
• Chandra X-ray observations of Abell 1835 to the virial radius
• The lack of star formation gradients in galaxy groups up to z~1.6
• Evidence for galaxies being pre-processed before accreted into clusters
• Deep Herschel view of obscured star formation in the Bullet cluster
• ACCESS III: The Nature of Star Formation in the Shapley Supercluster
• LoCuSS: Shedding New Light on the Massive Lensing Cluster Abell 1689 - The View From Herschel
• Discovery of "Warm Dust" Galaxies in Clusters at z~0.3: Evidence for Stripping of Cool Dust in the Dense Environment?
• A GALEX/Spitzer survey of the Cl0016+16 supercluster at z=0.55: acceleration of the onset of star-formation in satellite groups
• LoCuSS: exploring the connection between local environment, star formation and dust mass in Abell 1758
• ACCESS IV: The quenching of star formation in a cluster population of dusty S0s