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The duty cycle of local radio galaxies
journal contribution
posted on 2023-05-17, 07:46 authored by Stanislav ShabalaStanislav Shabala, Ash, S, Alexander, P, Riley, JMWe use a volume- and flux-limited sample of local (0.03 ¡Â z ¡Â 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.
History
Publication title
Monthly Notices of the Royal Astronomical SocietyVolume
388Pagination
625-637ISSN
0035-8711Department/School
School of Natural SciencesPublisher
Blackwell Publishing LtdPlace of publication
9600 Garsington Rd, Oxford, England, Oxon, Ox4 2DgRepository Status
- Restricted