I will present some of the first results from the MeerKAT Fornax Survey (MFS), that show that dwarf galaxies rapidly lose their cool gas once they have entered into the cluster. The MFS is now 25% complete, and thanks to the exquisite sensitivity and resolution of the MeerKAT telescope, we are exploring a new observational parameter space and have detected HI in a population of dwarf (Mr >...
The MeerKAT Survey of the Fornax galaxy cluster, which is 25% complete, revealed the presence of a HI-rich S0 galaxy in the center (∼0.4 Rvir) of Fornax: NGC 1436. This finding provides us with a good opportunity to test the current hypotheses of starvation and ISM stripping often invoked to account for the formation of S0 galaxies in clusters.
Our MeerKAT data (N(HI )∼10^18 cm−2) show a...
Deep galaxy surveys have shown that the star formation rate (SFR) decreases with redshift.
The cause of the decline in star formation activity is not yet completely understood. However, it can be studied by investigating how the acquisition and removal of the star-forming gas affect galaxies.
The GAs Stripping Phenomena (GASP) survey is conducting this investigation by selecting galaxies...
I will present results based on our GAlaxy Evolution and Assembly (GAEA) state-of-the-art semi-analytic model. GAEA follows the star formation, metallicity and black hole accretion history of galaxies in cosmological volumes, and includes an explicit partition of the cold gas content of galaxies in its molecular and atomic components. I will focus, in particular, on our studies of the HI...
Neutral hydrogen (HI) is a key ingredient in the baryonic picture of our Universe and understanding its abundance, redshift evolution, phenomenology and role in astrophysical and cosmological processes on different scales is currently the subject of an intense observational and theoretical effort by the community. In particular, HI is regarded to play a major role in galaxy evolution, being...
