597 citations · 11.5k across the 182 of their papers we have counts for
8 papers · 2 filters
Comparing peanut-shaped `bulges' to N-body simulations and orbital calculations
G. Aronica, E. Athanassoula, M. Bureau +4
We present a near-infrared K_n-band photometric study of edge-on galaxies with a box/peanut-shaped `bulge'. The morphology of the galaxies is analysed using unsharp masking and fit…
Formation and evolution of bars in disc galaxies
E. Athanassoula
I follow a bar from its formation, via its evolution, to its destruction and, perhaps, regeneration. I discuss the main features at each stage and particularly the role of the halo…
Star formation in the warped outer pseudoring of the spiral galaxy NGC 3642
L. Verdes--Montenegro, A. Bosma, E. Athanassoula
NGC 3642 was classified as a spiral galaxy with three rings and no bar. We have performed an HI and optical study of this nearly face-on galaxy. We find that the nuclear ring might…
Analysis of the distribution of HII regions in external galaxies. IV The new galaxy sample. Position and Inclination angles
C. Garcia-Gomez, E. Athanassoula, C. Barbera
We have compiled a new sample of galaxies with published catalogs of HII region coordinates. This sample, together with the former catalog of Garcia-Gomez and Athanassoula (1991) w…
Orbital dynamics of three-dimensional bars: II. Investigation of the parameter space
Ch. Skokos, P. A. Patsis, E. Athanassoula
We investigate the orbital structure in a class of 3D models of barred galaxies. We consider different values of the pattern speed, of the strength of the bar and of the parameters…
Orbital dynamics of three-dimensional bars: I. The backbone of 3D bars. A fiducial case
Ch. Skokos, P. A. Patsis, E. Athanassoula
In this series of papers we investigate the orbital structure of 3D models representing barred galaxies. In the present introductory paper we use a fiducial case to describe all fa…
Bar-Halo Interaction and Bar Growth
E. Athanassoula
I show that strong bars can grow in galactic discs, even when the latter are immersed in haloes whose mass within the disc radius is comparable to, or larger than, the mass of the…
Dynamical evolution driven by bars and interactions : Input from numerical simulations
E. Athanassoula
We discuss the evolution of a disc galaxy due to the formation of a bar and, subsequently, a peanut. After the formation stage there is still considerable evolution, albeit slower.…