Speaker
Description
Understanding the origin and working modes of the cessation of star formation in galaxies that lead to the passively evolving population is vital in galaxy evolution studies. The environment of galaxies is a critical aspect of these investigations, as the fraction of star-forming galaxies is the lowest inside galaxy clusters. At the same time, the fraction of passive galaxies is the highest. Several physical mechanisms are responsible for quenching star formation at higher frequencies in clusters relative to the field. One of the main mechanisms is ram-pressure stripping (RPS), which occurs as galaxies fall and interact with the intracluster medium. Examples of galaxies transforming due to RPS are galaxies that exhibit long gaseous tails stripped from the galaxy disc. In this talk, I will discuss the largest sample of HI gas tails to date in diverse environments of clusters from the MeerKAT Galaxy Cluster Legacy Survey. The work to be presented attempts to study the physical conditions required to form such strongly ram-pressure-stripped galaxies, i.e., physical properties of the galaxies, infall speed and times, and physical properties of the surrounding ICM.
| Stream | Science or Engineering |
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