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

Drouart, G.; De Breuck, C.; Vernet, Joël; Seymour, N.; Lehnert, M.; Barthel, P.; Bauer, F.E.; Ibar, E.; Galametz, A.; Haas, M.; Hatch, N.; Mullaney, J.R.; Nesvadba, N.; Rocca-Volmerange, B,; Röttgering, H.J.A.; Stern, D.; Wylezalek, D.

Authors

G. Drouart

C. De Breuck

Joël Vernet

N. Seymour

M. Lehnert

P. Barthel

F.E. Bauer

E. Ibar

A. Galametz

M. Haas

N. Hatch nina.hatch@nottingham.ac.uk

J.R. Mullaney

N. Nesvadba

B, Rocca-Volmerange

H.J.A. Röttgering

D. Stern

D. Wylezalek



Abstract

We present results from a comprehensive survey of 70 radio galaxies at redshifts 1 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< 2.5. By comparing the sSFR and the specific ṀBH (sṀBH), we conclude that black holes in radio loud AGN are already, or soon will be, overly massive compared to their host galaxies in terms of expectations from the local MBH–MGal relation. In order to catch up with the black hole, the galaxies require about an order of magnitude more time to grow in mass at the observed SFRs compared to the time the black hole is actively accreting. However, during the current cycle of activity, we argue that this catching up is likely to be difficult because of the short gas depletion times. Finally, we speculate on how the host galaxies might grow sufficiently in stellar mass to ultimately fall onto the local MBH–MGal relation.

Journal Article Type Article
Publication Date Jun 11, 2014
Journal Astronomy & Astrophysics
Electronic ISSN 1432-0746
Publisher EDP Open
Peer Reviewed Peer Reviewed
Volume 566
Article Number A53
APA6 Citation Drouart, G., De Breuck, C., Vernet, J., Seymour, N., Lehnert, M., Barthel, P., …Wylezalek, D. (2014). Rapidly growing black holes and host galaxies in the distant universe from the Herschel Radio Galaxy Evolution Project. Astronomy and Astrophysics, 566, doi:10.1051/0004-6361/201323310
DOI https://doi.org/10.1051/0004-6361/201323310
Keywords Active galaxies, Quasars, High-redshift galaxies, Supermassive back holes, Infrared galaxies
Publisher URL http://dx.doi.org/10.1051/0004-6361/201323310
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information Copyright 2014 ESO

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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