4 papers · 1 filter
Basis sets and Coulomb resolutions in rotational coordinates
Edward Lilley
Using generalised Laplacian symmetry operators, we construct basis sets or Coulomb resolutions in several separable coordinate systems, including two R-separable systems. This expa…
Schwarzschild Modeling of Barred S0 Galaxy NGC 4371
Behzad Tahmasebzadeh, Ling Zhu, Juntai Shen +15
We apply the barred Schwarzschild method developed by Tahmasebzadeh et al. (2022) to a barred S0 galaxy, NGC 4371, observed by IFU instruments from the TIMER and ATLAS3D projects.…
A two-parameter family of double-power-law biorthonormal potential-density expansions
E. J. Lilley, J. L. Sanders, N. W. Evans
Biorthonormal basis function expansions are widely used in galactic dynamics, both to study problems in galactic stability and to provide numerical algorithms to evolve collisionle…
Galaxy halo expansions: a new biorthogonal family of potential-density pairs
E. J. Lilley, J. L. Sanders, N. W. Evans +1
Efficient expansions of the gravitational field of (dark) haloes have two main uses in the modelling of galaxies: first, they provide a compact representation of numerically-constr…