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X-ray induced stellar mass loss near active galactic nucleiThe effects of UV and X-ray radiation on stars in active galactic nuclei (AGN) are critically evaluated. Mass loss rates in X-ray-induced winds are evaluated for realistic red giant models, and the effects of the ablation of stellar envelopes by radiation pressure are considered. The importance of X-ray-induced mass loss in the standard quasar model is evaluated and whether it can provide a source of accretion fuel or emission-line clouds is discussed. It is concluded that thermal winds driven by X-ray heating are a minor total supply of mass to AGN, but that thermal plus line-driven winds and stellar ablation may increase the mass loss and improve the chances for supplying a fraction of the necessary mass supply to the central object. It is speculated that when steady winds are inefficient, complex time-dependent processes due to X-ray energy injection deep into a stellar atmosphere could still release significant mass from stars.
Document ID
19880060264
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Voit, G. Mark
(Colorado Univ. Boulder, CO, United States)
Shull, J. Michael
(Colorado, University; Joint Institute for Laboratory Astrophysics, Boulder, CO, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1988
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 331
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
88A47491
Funding Number(s)
CONTRACT_GRANT: NSG-7128
CONTRACT_GRANT: NAGW-766
Distribution Limits
Public
Copyright
Other

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