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Wolf-Rayet stars in Active Galactic Nuclei

Published online by Cambridge University Press:  25 May 2016

Robin J.R. Williams ,
John E. Dyson  and
Judith J. Perry
Robin J.R. Williams
Affiliation:
Department of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
John E. Dyson
Affiliation:
Department of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
Judith J. Perry
Affiliation:
Institute of Astronomy, University of Cambridge, Cambridge CB3 0HA, UK

Extract

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Starbursts, black holes and AGN have strong observational links, as discussed elsewhere in these proceedings. Perry & Dyson (1985 (PD), see also Perry 1994) studied the role of shocks around supernovae and stellar wind bubbles in the nuclei of active galaxies. Both the ejecta and the ambient ISM are initially shocked to high temperatures. PD found that while the shocked gas is maintained at high pressure by ram pressure, it cools rapidly, to then produce the observed optical and UV emission lines. The mass supply rate from the nuclear starburst, inferred from the strength of the emission lines, tallies well with that required by an accreting black hole to generate the observed luminosity. A symbiosis between a starburst stellar cluster and an accreting black hole naturally generates the observational features associated with QSOs.

Type
Part 6. Starbursts in normal and active galaxies: their effects on the ISM and on chemical evolution
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 760 - 761
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

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