NGC 4340 is a double-barred SB0 galaxy in the Virgo cluster (Wozniak et al. 1995). Here, we present evidence that this galaxy also posseses a luminous stellar nuclear ring of relatively old stars with little or no gas. The ring lies just outside the inner bar, at the probable inner inner Lindblad resonance (IILR) of the outer bar. Careful

We present V-band surface photometry and major-axis kinematics of stars and ionized gas of three early-type spiral galaxies, namely NGC 772, NGC 3898 and NGC 7782. For each galaxy we built a self-consistent Jeans model for the stellar kinematics, adopting the light distribution of bulge and disc derived by means of a two-dimensional parametric

Photometry of the X-ray transient XTE J1859+226, obtained during outburst, showed at least 3 minioutbursts. During the second one, the source exhibited a 0.3 mag modulation with QPO flaring activity during the minimum.

We present gaseous and stellar kinematics for 14 gas-rich early-type galaxies. Half of the galaxies show irregular gaseous velocity profiles, with gas/star counter-rotation in 5 galaxies. We also find 5 counter-rotating stellar cores, and 5 more galaxies display stellar nuclei kinematically decoupled from the main stellar body. Our results indicate

In this paper we present the kinematics of the gas and/or the stars of a sample of 20 disc galaxies. We investigate whether there is any relation between the kinematics of the gas and stars and the classical morphological type of the galaxies in the sample. We deduce that, in most of the late-type spirals we have studied, the stars and the ionized

We show how the clumpy structure of the interstellar medium (ISM) both inside HII regions and in the diffuse component, permits the propagation of ionizing photons from OB stars on kiloparsec scales.