Herschel photometry of brightest cluster galaxies in cooling flow clusters

A. C. Edge, J. B.R. Oonk, R. Mittal, S. W. Allen, S. A. Baum, H. Böhringer, J. N. Bregman, M. N. Bremer, F. Combes, C. S. Crawford, M. Donahue, E. Egami, A. C. Fabian, G. J. Ferland, S. L. Hamer, N. A. Hatch, W. Jaffe, R. M. Johnstone, B. R. McNamara, C. P. O'DeaP. Popesso, A. C. Quillen, P. Salomé, C. L. Sarazin, G. M. Voit, R. J. Wilman, M. W. Wise

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The dust destruction timescales in the cores of clusters of galaxies are relatively short given their high central gas densities. However, substantial mid-infrared and sub-mm emission has been detected in many brightest cluster galaxies. In this letter we present Herschel PACS and SPIRE photometry of the brightest cluster galaxy in three strong cooling flow clusters, A1068, A2597 and Zw3146. This photometry indicates that a substantial mass of cold dust is present (> 3×107 M⊙) at temperatures significantly lower (20-28 K) than previously thought based on limited MIR and/or sub-mm results. The mass and temperature of the dust appear to match those of the cold gas traced by CO with a gas-to-dust ratio of 80-120.

Original languageEnglish (US)
Article numberL47
JournalAstronomy and astrophysics
Volume518
Issue number4
DOIs
StatePublished - 2010

Keywords

  • galaxies: clusters: intracluster medium
  • galaxies: elliptical and lenticular, cD

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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