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25 April 2024 |
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Environments and Morphologies of Red Sequence Galaxies with Residual Star Formation in Massive Clusters | | Jacob P. Crossett
; Kevin A. Pimbblet
; John P. Stott
; D. Heath Jones
; | | Date: |
28 Oct 2013 | | Abstract: | We present a photometric investigation into recent star formation in galaxy
clusters at z ~ 0.1. We use spectral energy distribution templates to quantify
recent star formation in large X-ray selected clusters from the LARCS survey
using matched GALEX NUV photometry. These clusters all have signs of red
sequence galaxy recent star formation (as indicated by blue NUV-R colour),
regardless of cluster morphology and size. A trend in environment is found for
these galaxies, such that they prefer to occupy low density, high cluster
radius environments. The morphology of these UV bright galaxies suggests that
they are in fact red spirals, which we confirm with light curves and Galaxy Zoo
voting percentages as morphological proxies. These UV bright galaxies are
therefore seen to be either truncated spiral galaxies, caught by ram pressure
in falling into the cluster, or high mass spirals, with the photometry
dominated by the older stellar population. | | Source: | arXiv, 1310.7602 | | Services: | Forum | Review | PDF | Favorites | |
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