Stellar models with isothermal cores

Henrich, Louis R. ; Chandrasekhar, S. (1940) Stellar models with isothermal cores Astrophysical Journal, 94 . pp. 525-536. ISSN 0004-637X

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This paper is devoted to the study of stellar models with isothermal cores. Two types of such configurations have been studied: (I) models with isothermal cores and polytropic envelopes (n=3) and (2) models with isothermal cores and radiative point-source envelopes with a law of opacity κ=κoρT-3.5. The most important characteristic of these models is the existence of an upper limit to the fraction ν of the total mass which can be contained in the core. For models of type 2, νmax~35%. Also it appears that, as ν increases, the radius of the star first decreases to a minimum value and then increases. Further, the luminosity of the star is found to increase by about a factor 3 from the stage when it has no isothermal core to the stage when the core contains the maximum possible mass.

Item Type:Article
Source:Copyright of this article belongs to American Astronomical Society.
ID Code:70611
Deposited On:17 Nov 2011 14:17
Last Modified:18 May 2016 16:36

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