Disentangling the stellar population properties of bulges and disks in cluster galaxies ...
The formation of S0 galaxies is still highly debated. Our aim is to shed light on the role of the environment in the evolution of S0 galaxies. Since environmental mechanisms can influence the bulge and disk components of galaxies in different ways, it is crucial to study their respective stellar pop...
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Macquarie University
2023
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| Online Access: | https://dx.doi.org/10.25949/23902518 https://figshare.mq.edu.au/articles/thesis/Disentangling_the_stellar_population_properties_of_bulges_and_disks_in_cluster_galaxies/23902518 |
| Summary: | The formation of S0 galaxies is still highly debated. Our aim is to shed light on the role of the environment in the evolution of S0 galaxies. Since environmental mechanisms can influence the bulge and disk components of galaxies in different ways, it is crucial to study their respective stellar populations separately. As a first step towards understanding the bulge and disk stellar populations, we use the multiband optical imaging of eight low-redshift clusters of galaxies. The deep spectroscopy from the Sydney-AAO Multi-object Integral field (SAMI) Cluster Redshift Survey allows us to analyse cluster members with M ⁎ / M ☉ > 10 9.5 and into the cluster outskirts up to the cluster-centric distance ~ 2.5 R 200 . We perform 2D photometric bulge-disk decomposition in the g , r and i -bands, from which we identify 469 double-component galaxies. Most bulges are found to be redder than their surrounding disks. Bulge colours do not correlate with environment metrics. Disk colours become significantly bluer at ... |
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