Speaker
Description
Context: Galaxies in the cluster environment differ from field or isolated galaxies, with ellipticals and lenticulars dominating in dense cluster environments and spirals in the field populations, hence, the morphology-density relation. Cluster galaxies tend to have older stellar population, suppressed star formation and are on average HI deficient compared to their field galaxies conuterparts. Given that almost 40% of galaxies in the universe reside in groups or clusters, the cluster environment plays a crucial role in galaxy evolution in the universe.
Aims: The goal of this work is to explore galaxy properties and evolution in a variety of cluster environments by utilising data from the MeerKAT Galaxy Cluster Legacy Survey (MGCLS). We aim to explore how various scaling relations and HI morphologies vary with various cluster sizes and dynamical states and consequently produce a science exploration paper using the MeerKAT HI cluster data.
Methods: MeerKAT’s large number (64) of 13.5 m diameter antennas, spanning 8 km with a densely packed 1 km core, were used to observe 115 galaxy clusters for 6-10 hours each in full polarisation using the L-band (900-1670 MHz) in the MGCLS. This resulted in the first legacy product data release (DR1) with the HI spectral image cubes at ~ 8’’ resolution. SoFiA was later used to detect sources within the image cubes.
| Stream | Science or Engineering |
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