Journal
PHYSICAL REVIEW C
Volume 85, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.85.055802
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Funding
- Capes/FCT [232/09]
- CNPq
- FAPESC (Brazil) [1373/2010-0]
- FCT
- FEDER/COMPETE (Portugal) [CERN/FP/83505/2008, PTDC/FIS/113292/2009]
- Compstar, an ESF Research Networking
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We investigate compact star properties within the quark-meson-coupling model with a soft symmetry energy density dependence at large densities. In particular, the hyperon content and the mass/radius curves for the families of stars obtained within the model are discussed. The hyperon-meson couplings are chosen according to experimental values of the hyperon nuclear matter potentials, and possible uncertainties are considered. It is shown that a softer symmetry energy gives rise to stars with less hyperons, smaller radii, and larger masses. Hyperon-meson couplings may also have a strong effect on the mass of a star.
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