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

M. J. Pereira, C. P. Haines, G. P. Smith, E. Egami, S. M. Moran, A. Finoguenov, E. Hardegree-Ullman, N. Okabe, T. Rawle, M. Rex

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

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.

Original languageEnglish (US)
Article numberL40
JournalAstronomy and astrophysics
Volume518
Issue number7-8
DOIs
StatePublished - Jul 16 2010
Externally publishedYes

Keywords

  • Galaxies: clusters: individual: A1835
  • Galaxies: evolution
  • Galaxies: star formation
  • Infrared: galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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