Constraining gas kinematics and distributions with spatially unresolved HI observations

Adam Watts

doi:10.26182/4mmp-kc74

Constraining gas kinematics and distributions with spatially unresolved HI observations

Adam Watts

Research output: Thesis › Doctoral Thesis

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Abstract

This thesis investigates the information contained in observations of neutral atomic hydrogen (HI) gas in galaxies. Measurement of disturbance in the HI is used to study how it relates to galaxy evolution. We find that HI disturbances are larger in galaxies with lower HI content, and those experiencing HI removal by their external environment. Otherwise, disturbances are ubiquitous and can have numerous causes. Most HI disturbances exist in the outskirts of galaxies, but the strongest ones can also affect their central regions. These results will aid future studies using next-generation HI surveys with the Square Kilometre Array.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Catinella, Barbara, Supervisor Power, Chris, Supervisor Cortese, Luca, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	6 Dec 2021
DOIs	https://doi.org/10.26182/4mmp-kc74
Publication status	Unpublished - 2021

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10.26182/4mmp-kc74

THESIS - DOCTOR OF PHILOSOPHY - WATTS, Adam Brian - 2021
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Cite this

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title = "Constraining gas kinematics and distributions with spatially unresolved HI observations",

abstract = "This thesis investigates the information contained in observations of neutral atomic hydrogen (HI) gas in galaxies. Measurement of disturbance in the HI is used to study how it relates to galaxy evolution. We find that HI disturbances are larger in galaxies with lower HI content, and those experiencing HI removal by their external environment. Otherwise, disturbances are ubiquitous and can have numerous causes. Most HI disturbances exist in the outskirts of galaxies, but the strongest ones can also affect their central regions. These results will aid future studies using next-generation HI surveys with the Square Kilometre Array.",

keywords = "radio astronomy, galaxy evolution, galaxy clusters, atomic hydrogen, star formation, gas asymmetry, kinematics, optical integral field spectroscopy",

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school = "The University of Western Australia",

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N2 - This thesis investigates the information contained in observations of neutral atomic hydrogen (HI) gas in galaxies. Measurement of disturbance in the HI is used to study how it relates to galaxy evolution. We find that HI disturbances are larger in galaxies with lower HI content, and those experiencing HI removal by their external environment. Otherwise, disturbances are ubiquitous and can have numerous causes. Most HI disturbances exist in the outskirts of galaxies, but the strongest ones can also affect their central regions. These results will aid future studies using next-generation HI surveys with the Square Kilometre Array.

AB - This thesis investigates the information contained in observations of neutral atomic hydrogen (HI) gas in galaxies. Measurement of disturbance in the HI is used to study how it relates to galaxy evolution. We find that HI disturbances are larger in galaxies with lower HI content, and those experiencing HI removal by their external environment. Otherwise, disturbances are ubiquitous and can have numerous causes. Most HI disturbances exist in the outskirts of galaxies, but the strongest ones can also affect their central regions. These results will aid future studies using next-generation HI surveys with the Square Kilometre Array.

KW - radio astronomy

KW - galaxy evolution

KW - galaxy clusters

KW - atomic hydrogen

KW - star formation

KW - gas asymmetry

KW - kinematics

KW - optical integral field spectroscopy

U2 - 10.26182/4mmp-kc74

DO - 10.26182/4mmp-kc74

M3 - Doctoral Thesis

ER -

Constraining gas kinematics and distributions with spatially unresolved HI observations

Abstract

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