NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-20 T23:07:21 PDT
Help | Comment | NED Home

For refcode 1999MNRAS.306..599E:
Retrieve 11 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 1999MNRAS.306..599E The detection of dust in the central galaxies of distant cooling-flow clusters A. C. Edge, R. J. Ivison, Ian Smail, A. W. Blain and J.-P. Kneib Accepted 1999 February 8. Received 1999 January 27; in original form 1998 September 9 ABSTRACT We present 850-micron observations with the SCUBA submillimetre (sub-mm) camera of the central galaxies in seven concentrated clusters of galaxies at redshifts between 0.19 and 0.41. We detect sub-mm emission from the central galaxies in the rich clusters A1835 and A2390, and present upper limits for the central galaxies in the remaining five clusters. The two galaxies that we detect both exhibit unusually blue UV-optical colours and lie in clusters that contain massive cooling flows, >= 1000 M_sun_ yr^-1^. Moreover, both galaxies host relatively strong radio sources. Focusing on these two systems, we present new and archival radio-optical observations to provide a detailed view of their spectral energy distributions. Our analysis indicates that sub-mm emission from the central galaxy of A1835 can be best understood as arising from dust, heated by either vigorous star formation or an obscured active galactic nucleus. For the central galaxy of A2390, the sub-mm flux is marginally consistent with an extrapolation of the cm-mm emission from the luminous radio source that lies in its core, although we cannot rule out an excess flux density from dust emission comparable to that seen in A1835. We present details of our multiwavelength observations and discuss the implications of these data for the interpretation of star formation in cooling-flow galaxies. Keywords: galaxies: active - galaxies: clusters: individual: A1835 - galaxies: clusters:individual: A2390 - cooling flows - galaxies: starburst
Retrieve 11 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home