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Star-disk collisions and the origin of the broad lines in quasarsQuasars and other active galactic nuclei (AGNs) are most likely powered by a massive black hole surrounded by an accretion disk and inhabiting the core of a dense stellar cluster. Star orbits intersect the disk. Hence, star-disk collisions are a daily (if not more frequent) occurrence. We consider the consequences of such collisions and show that the 'star tails' of the disk material, accelerated by the encounter with the passing star, can travel well above the disk and, therefore, are a natural candidate for the observed broad emission-line regions.
Document ID
19950050289
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Zurek, W. H.
(LANL, Los Alamos, NM United States)
Siemiginowska, A.
(Center for Astrophysics, Cambridge, MA United States)
Colgate, Stirling A.
(LANL, Los Alamos, NM United States)
Date Acquired
August 16, 2013
Publication Date
October 10, 1994
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 434
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
95A81888
Funding Number(s)
CONTRACT_GRANT: NAGW-2201
Distribution Limits
Public
Copyright
Other

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