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Issue A&A Volume 385, Number 3, April III 2002 Page(s) 947 - 950 Section Formation, structure and evolution of stars DOI 10.1051/0004-6361:20020260

A&A 385, 947-950 (2002)
DOI: 10.1051/0004-6361:20020260

Maximum mass and radius of strange stars in the linear approximation of the EOS

T. Harko and K. S. Cheng

Department of Physics, The University of Hong Kong, Pok Fu Lam Road, Hong Kong, PR China

(Received 9 August 2001 / Accepted 4 February 2002 )

Abstract
The Chandrasekhar limit for strange stars described by a linear equation of state (describing quark matter with density-dependent quark masses) is evaluated. The maximum mass and radius of the star depend on the fundamental constants and on the energy density of the quark matter at zero pressure. By comparing the expression for the mass of the star with the limiting mass formula for a relativistic degenerate stellar configuration one can obtain an estimate of the mass of the strange quark.

Key words: dense matter -- equation of state -- stars: fundamental parameters

Offprint request: T. Harko, tcharko@hkusua.hku.hk

© ESO 2002

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