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Dense stellar cores in merger remnantsWe use numerical models which include star formation to analyze the mass profiles of remnants formed by mergers of disk galaxies. During a merger, dissipation in gas and ensuing star formation leave behind a dense stellar core in the remnant. Rather than joining smoothly onto a de Vaucouleurs profile, the starburst population leads to a sharp break in the surface density profile at a few percent of the effective radius. While our results are preliminary, the lack of such signatures in most elliptical galaxies suggests that mergers of gas-rich disk galaxies may not have contributed greatly to the populations of present-day ellipticals.
Document ID
19950040645
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mihos, J. Christopher
(University of California, Santa Cruz, CA United States)
Hernquist, Lars
(University of California, Santa Cruz, CA United States)
Date Acquired
August 16, 2013
Publication Date
December 10, 1994
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 437
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
95A72244
Funding Number(s)
CONTRACT_GRANT: NAGW-2422
CONTRACT_GRANT: NSF ASC-93-18185
CONTRACT_GRANT: NSF AST-90-18526
Distribution Limits
Public
Copyright
Other

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