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  • 2024AmosPhD

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A 3D view of environmental quenching across cosmic time

Research output: Thesis › Doctoral Thesis

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A 3D view of environmental quenching across cosmic time. / Amos, Nick.
Lancaster University, 2024. 154 p.

Research output: Thesis › Doctoral Thesis

Harvard

Amos, N 2024, 'A 3D view of environmental quenching across cosmic time', PhD, Lancaster University. https://doi.org/10.17635/lancaster/thesis/2243

APA

Amos, N. (2024). A 3D view of environmental quenching across cosmic time. [Doctoral Thesis, Lancaster University]. Lancaster University. https://doi.org/10.17635/lancaster/thesis/2243

Vancouver

Amos N. A 3D view of environmental quenching across cosmic time. Lancaster University, 2024. 154 p. doi: 10.17635/lancaster/thesis/2243

Author

Amos, Nick. / A 3D view of environmental quenching across cosmic time. Lancaster University, 2024. 154 p.

Bibtex

@phdthesis{34a589aac3e640f2aed26da66db69826,
title = "A 3D view of environmental quenching across cosmic time",
abstract = "The study of galaxy evolution is crucial to our understanding of the Uni-verse. It determines how galaxies got from where they started and whattheir likely end will be. Also crucial is our understanding of how galaxiesin denser environments evolve compared to those that are more isolated.A large proportion of the galaxies in the Universe are found in galaxyclusters and so they form a significant population. Significantly, we see atthe so called cosmic noon that these galaxies begin to change from largelystar-forming to more quiescent systems. This is true both in the field andcluster environment but the significance of the latter on quenching must beunderstood.In this thesis we investigate star-forming galaxies in clusters at cosmicnoon using spatially resolved spectroscopy of the gas content in thesegalaxies alongside near-infrared photometry. Using these complimentarydata we demonstrate that while the cluster environment does not appear toimpact these galaxies significantly in some ways compared to their fieldcounterparts, it may be changing their morphology, which in turn mayimpact their star-formation-rate. We also find that the metallicities of thesecluster galaxies deviate from relationships derived from samples of fieldgalaxies, which may indicate the environmental impact of gas exchangebetween the galaxies and their host cluster but more data is needed todetermine if these conclusions are statistically significant.Finally, we report on the serendipitous discovery of a likely BrightestCluster Galaxy caught in the act of formation. Analysis of the kinematicsof two of the four potential merger components indicates that these arelikely to merge. Alongside this assessing various combinations of the finalgalaxy stellar masses using these four components demonstrate the finalBCG would be well within the mass ranges expected for a BCG at z ∼ 1.4.",
keywords = "Galaxy evolution, Galaxy clusters, Galaxy kinematics, Galaxy quenching, Brightest cluster galaxies",
author = "Nick Amos",
year = "2024",
doi = "10.17635/lancaster/thesis/2243",
language = "English",
publisher = "Lancaster University",
school = "Lancaster University",

}

RIS

TY - BOOK

T1 - A 3D view of environmental quenching across cosmic time

AU - Amos, Nick

PY - 2024

Y1 - 2024

N2 - The study of galaxy evolution is crucial to our understanding of the Uni-verse. It determines how galaxies got from where they started and whattheir likely end will be. Also crucial is our understanding of how galaxiesin denser environments evolve compared to those that are more isolated.A large proportion of the galaxies in the Universe are found in galaxyclusters and so they form a significant population. Significantly, we see atthe so called cosmic noon that these galaxies begin to change from largelystar-forming to more quiescent systems. This is true both in the field andcluster environment but the significance of the latter on quenching must beunderstood.In this thesis we investigate star-forming galaxies in clusters at cosmicnoon using spatially resolved spectroscopy of the gas content in thesegalaxies alongside near-infrared photometry. Using these complimentarydata we demonstrate that while the cluster environment does not appear toimpact these galaxies significantly in some ways compared to their fieldcounterparts, it may be changing their morphology, which in turn mayimpact their star-formation-rate. We also find that the metallicities of thesecluster galaxies deviate from relationships derived from samples of fieldgalaxies, which may indicate the environmental impact of gas exchangebetween the galaxies and their host cluster but more data is needed todetermine if these conclusions are statistically significant.Finally, we report on the serendipitous discovery of a likely BrightestCluster Galaxy caught in the act of formation. Analysis of the kinematicsof two of the four potential merger components indicates that these arelikely to merge. Alongside this assessing various combinations of the finalgalaxy stellar masses using these four components demonstrate the finalBCG would be well within the mass ranges expected for a BCG at z ∼ 1.4.

AB - The study of galaxy evolution is crucial to our understanding of the Uni-verse. It determines how galaxies got from where they started and whattheir likely end will be. Also crucial is our understanding of how galaxiesin denser environments evolve compared to those that are more isolated.A large proportion of the galaxies in the Universe are found in galaxyclusters and so they form a significant population. Significantly, we see atthe so called cosmic noon that these galaxies begin to change from largelystar-forming to more quiescent systems. This is true both in the field andcluster environment but the significance of the latter on quenching must beunderstood.In this thesis we investigate star-forming galaxies in clusters at cosmicnoon using spatially resolved spectroscopy of the gas content in thesegalaxies alongside near-infrared photometry. Using these complimentarydata we demonstrate that while the cluster environment does not appear toimpact these galaxies significantly in some ways compared to their fieldcounterparts, it may be changing their morphology, which in turn mayimpact their star-formation-rate. We also find that the metallicities of thesecluster galaxies deviate from relationships derived from samples of fieldgalaxies, which may indicate the environmental impact of gas exchangebetween the galaxies and their host cluster but more data is needed todetermine if these conclusions are statistically significant.Finally, we report on the serendipitous discovery of a likely BrightestCluster Galaxy caught in the act of formation. Analysis of the kinematicsof two of the four potential merger components indicates that these arelikely to merge. Alongside this assessing various combinations of the finalgalaxy stellar masses using these four components demonstrate the finalBCG would be well within the mass ranges expected for a BCG at z ∼ 1.4.

KW - Galaxy evolution

KW - Galaxy clusters

KW - Galaxy kinematics

KW - Galaxy quenching

KW - Brightest cluster galaxies

U2 - 10.17635/lancaster/thesis/2243

DO - 10.17635/lancaster/thesis/2243

M3 - Doctoral Thesis

PB - Lancaster University

ER -