bastionstelsels
Bastionstelsels is a term used in some astronomical contexts to describe a class of galactic systems characterized by a compact, dense core that remains bound in the face of tidal forces in dense environments, such as galaxy clusters. The term evokes a fortress-like central region that acts as a bastion against disruption, preserving much of the system’s stellar content.
Formation and evolution: Bastionstelsels are thought to originate through early, rapid star formation in deep potential
Physical properties: They typically exhibit high central velocity dispersion relative to their luminosity, small effective radii,
Observational status: The term is not universally applied as a formal class, but several compact ellipticals
Significance: If realized in nature, bastionstelsels would provide constraints on tidal evolution, subhalo survival, and central