The spiral galaxy NGC 3521 exhibits apparently normal kinematic properties of gas and stars along its major axis. However, the analysis of the LOSVD reveals strong asymmetries. A decomposition of the LOSVD data with a two-Gaussian component model shows two counter-rotating stellar components. The observed kinematic decoupling is interpreted as a

Using high-quality H_α images of five spiral galaxies, we have studied the luminosity and distribution of the emission from diffuse ionized gas (DIG). The estimated DIG luminosities account for 25-60% of the total H_α emission in each galaxy and analysis of the distribution has shown that the DIG is highly correlated geometrically with the most

We consider the branching ratio for the process $t o c gamma$ in the context of the General Two Higgs Doublet Model type III. We find that taking into account reasonable values for the parameter $ an eta$ is possible to get values of this branching ratio up to orders of magnitude lying in the range of sensitivity of near future top quark

We present preliminary results of the surface photometry of a sample of blue compact dwarf galaxies (BCDGs). A total of 28 galaxies have been observed in the BVRI bands. From these data the contour maps and surface brightness distributions in each band have been built. Contour maps and surface profiles of the 22 galaxies already analysed are

Standard cosmology predicts that dwarfs were the first galaxies to be formed in the universe and that many of them merge afterward to form bigger galaxies such as the Milky Way. This process would have left behind traces such as tidal debris or star streams in the outer halo. We report here the detection of a very low density stellar system at 50+/

We have digitally coadded APM scans of 13 Kodak TechPan films of the SE region of the Virgo Cluster of galaxies. The ~6.2°×6.2° field of the R-band films combined with the resolution of ~2 arcsec pixel^- results in data-file sizes of about 222 MBytes. The 13 scanned films have been aligned, coadded, corrected for vignetting effects and cleaned of