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The duty cycle of local radio galaxies
Citation
Shabala, SS and Ash, S and Alexander, P and Riley, JM, The duty cycle of local radio galaxies, Monthly Notices of the Royal Astronomical Society, 388, (2) pp. 625-637. ISSN 0035-8711 (2008) [Refereed Article]
DOI: doi:10.1111/j.1365-2966.2008.13459.x
Abstract
We 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.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | galaxies: active – intergalactic medium – galaxies: jets – galaxies: luminosity |
| Research Division: | Physical Sciences |
| Research Group: | Astronomical sciences |
| Research Field: | Astronomical sciences not elsewhere classified |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the physical sciences |
| UTAS Author: | Shabala, SS (Associate Professor Stas Shabala) |
| ID Code: | 72486 |
| Year Published: | 2008 |
| Web of Science® Times Cited: | 99 |
| Deposited By: | Physics |
| Deposited On: | 2011-08-29 |
| Last Modified: | 2020-12-02 |
| Downloads: | 0 |
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