65 citations · 84 across the 5 of their papers we have counts for
5 papers
Dynamically possible pattern speeds of double bars
Witold Maciejewski
The method to study oscillating potentials of double bars, based on invariant loops, is introduced here in a new way, intended to be more intelligible. Using this method, I show ho…
Central mass accumulation in nuclear spirals
Witold Maciejewski
In central regions of non-axisymmetric galaxies high-resolution hydrodynamical simulations indicate spiral shocks, which are capable of transporting gas inwards. The efficiency of…
Regular motions in double bars. I. Double-frequency orbits and loops
Witold Maciejewski, E. Athanassoula
Bars in galaxies are mainly supported by particles trapped around stable periodic orbits. These orbits represent oscillatory motion with only one frequency, which is the bar drivin…
Supermassive black holes in the Sbc spiral galaxies NGC 3310, NGC 4303 and NGC 4258
Guia Pastorini, Alessandro Marconi, Alessandro Capetti +12
We present new Space Telescope Imaging Spectrograph (STIS) observations of three spiral galaxies, NGC 4303, NGC 3310 and NGC 4258. The bright optical emission lines H $6564…
Nuclear spirals in galaxies
Witold Maciejewski
Recent high-resolution observations indicate that nuclear spirals are often present in the innermost few hundred parsecs of disc galaxies. My models show that nuclear spirals form…