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The core mass-radius relation for giants - A new test of stellar evolution theoryIt is demonstrated here that the measurable properties of systems containing degenerate dwarfs can be used as a direct test of the core mass-radius relation for moderate-mass giants if the final stages of the loss of the envelope of the progenitor giant occurred via stable critical lobe overflow. This relation directly probes the internal structure of stars at a relatively advanced evolutionary state and is only modestly influenced by adjustable parameters. The measured properties of six binary systems, including such diverse systems as Sirius and Procyon and two millisecond pulsars, are utilized to derive constraints on the empirical core mass-radius relation, and the constraints are compared to the theoretical relation. The possibility that the final stages of envelope ejection of the giant progenitor of Sirius B occurred via critical lobe overflow in historical times is considered.
Document ID
19870062568
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Joss, P. C.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Rappaport, S.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Lewis, W.
(MIT Cambridge, MA, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 319
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
87A49842
Funding Number(s)
CONTRACT_GRANT: NGL-22-009-638
CONTRACT_GRANT: NSF AST-84-19834
CONTRACT_GRANT: NSG-7643
Distribution Limits
Public
Copyright
Other

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