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Rapidly growing black holes and host galaxies in the distant Universe from the Herschel Radio Galaxy Evolution Project

Drouart, Guillaume, 1987 (author)
Chalmers tekniska högskola,Chalmers University of Technology
De Breuck, C. (author)
European Southern Observatory (ESO)
Vernet, J. (author)
European Southern Observatory (ESO)
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Seymour, N. (author)
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Lehnert, M. (author)
Institut d 'Astrophysique de Paris
Barthel, P. D. (author)
Rijksuniversiteit Groningen,University of Groningen
Bauer, F. E. (author)
Space Science Institute,Pontificia Universidad Catolica de Chile
Ibar, E. (author)
Universidad de Valparaíso,University of Valparaíso,Pontificia Universidad Catolica de Chile
Galametz, A. (author)
Istituto nazionale di astrofisica (INAF)
Haas, M. (author)
Ruhr-Universität Bochum
Hatch, N. (author)
University Of Nottingham
Mullaney, J. R. (author)
Durham University
Nesvadba, N. (author)
Université Paris-Sud XI,University of Paris-Sud XI
Rocca-Volmerange, B. (author)
Institut d 'Astrophysique de Paris
Rottgering, H. (author)
Universiteit Leiden (UL),Leiden University (UL)
Stern, D. (author)
Wylezalek, D. (author)
European Southern Observatory (ESO)
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 (creator_code:org_t)
2014-06-11
2014
English.
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 566
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We present results from a comprehensive survey of 70 radio galaxies at redshifts 1 10(12) L-circle dot) or hyper-luminous (L-tot(IR) > 10(13) L-circle dot) infrared galaxies. We fit the infrared SEDs with a set of empirical templates which represent dust heated by a variety of starbursts (SB) and by an active galactic nucleus (AGN). We find that the SEDs of radio galaxies require the dust to be heated by both AGN and SB, but the luminosities of these two components are not strongly correlated. Assuming empirical relations and simple physical assumptions, we calculate the star formation rate (SFR), the black hole mass accretion rate ((M) over dot(BH)), and the black hole mass (M-BH) for each radio galaxy. We find that the host galaxies and their black holes are growing extremely rapidly, having SFR approximate to 100-5000 M-circle dot yr(-1) and. (M) over dot(BH) approximate to 1-100 M(circle dot)yr(-1). The mean specific SFRs (sSFR) of radio galaxies at z > 2 : 5 are higher than the sSFR of typical star forming galaxies over the same redshift range, but are similar or perhaps lower than the galaxy population for radio galaxies at z

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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