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Globular Cluster Scale Sizes in Giant Galaxies: The Case of M87 and the Role of Orbital Anisotropy and Tidal Filling
Jeremy J. Webb, Alison Sills, William E. Harris
We present new Hubble Space Telescope imaging of the outer regions of M87 in order to study its globular cluster (GC) population out to large galactocentric distances. We discuss p…
The Size Difference Between Red And Blue Globular Clusters Is NOT Due To Projection Effects
Jeremy J. Webb, William E. Harris, Alison Sills
Metal-rich (red) globular clusters in massive galaxies are, on average, smaller than metal-poor (blue) globular clusters. One of the possible explanations for this phenomenon is th…
The Observational and Theoretical Tidal Radii of Globular Clusters in M87
Jeremy J. Webb, Alison Sills, William E. Harris
Globular clusters have linear sizes (tidal radii) which theory tells us are determined by their masses and by the gravitational potential of their host galaxy. To explore the relat…