Observations show that massive star formation quenches first at the centres of galaxies. To understand quenching mechanisms, we investigate the thermal and non...

The importance of Luminous and Ultraluminous infrared galaxies (U/LIRGs) in the context of the cosmological evolution of the star-formation has been well...

Galaxies in different environments have different properties. In dense environments galaxies are more likely to be red, passive ellipticals than in less dense...

Recent works show that the restframe colours of X-ray selected AGN host galaxies at z~1 are no different from those of inactive galaxies once stellar mass...

Dwarf galaxies are the most common type of galaxy in the Universe andinclude the most dark-matter-dominated objects known. They offerintriguing insights into...

The hierarchical nature of structure formation predicts that haloes grow by the aggregation of several lower-mass "clumps". A natural consequence of this...

Two-dimensional stellar kinematics obtained with the integral-field spectrograph SAURON allow the classification of early-type galaxies into 'slow' and 'fast'...

Early-type galaxies: instructions to build them through mergers Massive early-type galaxies (ETGs) are "red and dead" systems mainly composed of old and metal...

When we measure the electron density within an H II region using ratios of emission lines we find characteristic values in the range of 100-300 cm -3. But when...