Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 388, Issue 2, Pages 625-637Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2008.13459.x
Keywords
galaxies : active; intergalactic medium; galaxies : jets; galaxies : luminosity function, mass function
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We use a volume- and flux-limited sample of local (0.03 <= z <= 0.1) radio galaxies with optical counterparts to address the question of how long a typical galaxy spends in radio active and quiescent states. The length of the active phase has a strong dependence on the stellar mass of the host galaxy. Radio sources in the most massive hosts are also retriggered more frequently. The time spent in the active phase has the same dependence on stellar mass as does the gas cooling rate, suggesting the onset of the quiescent phase is due to fuel depletion. We find radio and emission-line active galactic nuclei (AGN) activity to be independent, consistent with these corresponding to different accretion states.
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