Journal article
Globular cluster scale sizes in giant galaxies: orbital anisotropy and tidally underfilling clusters in M87, NGC 1399 and NGC 5128
Abstract
We investigate the shallow increase in globular cluster half-light radii with projected galactocentric distance Rgc observed in the giant galaxies M87, NGC 1399, and NGC 5128. To model the trend in each galaxy, we explore the effects of orbital anisotropy and tidally underfilling clusters. While a strong degeneracy exists between the two parameters, we use kinematic studies to help constrain the distance Rβ beyond which cluster orbits become …
Authors
Webb JJ; Sills A; Harris WE; Gómez M; Paolillo M; Woodley KA; Puzia TH
Journal
Monthly Notices of the Royal Astronomical Society, Vol. 460, No. 2, pp. 2129–2142
Publisher
Oxford University Press (OUP)
Publication Date
August 1, 2016
DOI
10.1093/mnras/stw1115
ISSN
0035-8711