Most secular effects produced by stellar bars strongly depend on the pattern speed.
Unfortunately, it is also the most difficult observational parameter to estimate. In this work, we …

Cosmological simulations show that dark matter halos surrounding baryonic disks have a
wide range of angular momenta, which is measured by the spin parameter (λ). In this study …

We present a detailed analysis of the kinematics of 112 stars that mostly comprise the high-
velocity S cluster and orbit the supermassive black hole Sgr A* at the center of the Milky …

Many barred galaxies exhibit upturns (shoulders) in their bar-major-axis density profile.
Simulation studies have suggested that shoulders are supported by looped x 1 orbits, occur …

X-structures are often observed in galaxies hosting the so-called B/PS (boxy/peanuts)
bulges and are visible from the edge-on view. They are the most notable features of B/PS …

Abstract Implementing the Generalized Alignment Index (GALI) method of chaos detection
we investigate the dynamical behavior of the nonlinear disordered Klein–Gordon lattice …

Based on the spectral analysis of individual orbits of stars from different N-body models, we
show that the face-on morphology of the so-called 'face-on peanut'bars (boxy bars) and …

Dwarf barred galaxies are the perfect candidates for hosting slowly rotating bars. They are
common in dense environments and have a relatively shallow potential well, making them …

Recently, many orbital studies in barred galaxy potentials have revealed the existence of
orbits that are not trapped around x1-tree orbits, but could be potentially appropriate building …

The bar structure in disc galaxies models is formed by different families of orbits; however, it
is not clear how these families of orbits support the bar throughout its secular evolution …