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Table 1

Summary of the properties of the families of models studied in the present paper.

Family of Distribution Dimensionless Internal Anisotropy Isophote Paper
models function parameters rotation profile shape sections

Ae − aH0 [e − a(H − H0) − 1]  Ψ, χ solid-body (0,0,0) disky 2
Ae − aE0 [e − a(I − E0) − 1 + a(I − E0)]  Ψ, χ, , c differential (0,    > 0, − 2) boxy 3, 4, 5, 6
Ae − aE0e − a(I − E0) Ψ, χ, , c differential (0,    > 0,0) boxy 3, 6, Appendix B] 

Notes. The relevant integrals are defined as H = E − ωJz and , with the corresponding cut-off constants given by H0 and E0. The dimensionless parameters are defined as follows: Ψ = ψ(0) respresents a measure of the concentration, χ = ω2/(4πGρ0) a measure of the (central) rotation strength, and, for the family of differentially rotating models, and c > 1/2 determine the shape of the rotation profile. The pressure anisotropy profiles are characterized in terms of the values of the anisotropy parameter in the central, intermediate, and outer regions of a model; values of α greater than, lower than, and equal to zero indicate radially-biased, tangentially-biased anisotropy, and isotropy in velocity space, respectively. For each family of models, the first and third values of α are calculated analytically as the limiting values for small and large radii. For physical reasons discussed in Sect. 3.1, the focus of the paper is on the first two families.

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