Supernova remnants are widely considered to be the strongest candidates for the source of cosmic rays at ultra high energies (around 1015 eV), producing gamma-rays through hadronic and/or electromagnetic scenarios. Pulsar wind nebulae are synchrotron nebulae powered by the spin-down of energetic young pulsars, and one of the most abundant very high

We present new intermediate-band Strömgren photometry based on more than 300 u,v,b,y images of the Galactic globular cluster omega Cen p, covering a region of more than 20×20 arcmin squared across the cluster center. By adopting different Strömgren metallicity indices we estimate the photometric metallicity for ≈ 4,000 Red Giants, the largest

We present the latest results of the Spitzer Cosmological Surveys concerning the characterization of the evolution of galaxies in the last 12Gyr (from z=4). We have analyzed the stellar mass function up to z=4 using a sample of more than 28,000 galaxies selected in the rest-frame near-infrared with Spitzer/IRAC. Our results confirm and quantify the

A relationship is identified between the largest (top 5%) most rapid global increases in ISCCP retrieved IR cloud cover and statistically significant increases in the rate of galactic cosmic ray (GCR) flux across the globe; the cloud changes correspond both temporally and spatially to significant variations in a range of NCEP/NCAR reanalysis

The studies of the evolution of galaxies in Galaxy Clusters have as a traditional complication the difficulty in establishing cluster membership of those sources detected in the field of view. The determination of spectroscopic redshifts involves long exposure times when it is needed to reach the cluster peripheral regions of/or clusters at

Secular evolution gradually shapes galaxies by internal processes,in contrast to early cosmological evolution which is more rapid. Animportant driver of secular evolution is the flow of gas from the disk into the central regions, often under the influence of a bar. In this chapter we review several new observational results on barsand nuclear rings