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Title:
The structure and evolution of Thorne-Zytkow objects
Authors:
Cannon, R. C.; Eggleton, P. P.; Zytkow, A. N.; Podsiadlowski, P.
Affiliation:
AA(California, University, Santa Barbara), AB(California, University, Santa Barbara), AC(Cambridge University Institute of Astronomy, England), AD(Cambridge University Institute of Astronomy, England)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 386, Feb. 10, 1992, p. 206-214. (ApJ Homepage)
Publication Date:
02/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Neutron Stars, Stellar Cores, Stellar Evolution, Stellar Mass Accretion, Computational Astrophysics, Hertzsprung-Russell Diagram, Stellar Envelopes, Stellar Models
DOI:
10.1086/171006
Bibliographic Code:
1992ApJ...386..206C

Abstract

Models of spherically symmetric stars are constructed in which a central neutron star core is accreting material from an envelope (Thorne-Zytkow objects or TZOs). Core masses are allowed to grow by accretion from 0.5 to 2.0 solar masses, and envelope masses range from 0 to 30 solar masses. Models are found which populate the entire range of both parameters, and a limited range of parameter space in which two distinct types of models can coexist, one where gravitational energy and one where nuclear energy is the dominant source of energy.

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