Angular momentum and atomic gas: their connection in the local Universe in observations and simulations

Jennifer Hardwick

doi:10.26182/h8bj-rv05

Angular momentum and atomic gas: their connection in the local Universe in observations and simulations

Jennifer Hardwick

Research output: Thesis › Doctoral Thesis

86 Downloads (Pure)

Abstract

This thesis focuses on nearby galaxies from the xGASS survey and investigates the relationship between their angular momentum (j) and atomic gas content (f_atm). We find the j-mass relation slope depends on the sample's distribution of morphologies and show that f_atm is the strongest correlated parameter with this relations scatter. Despite the Obreschkow et al. 2016 model making similar predictions, we find our data deviates from its predictions. Instead, at fixed f_atm, the j vs. M slope is shallower than predicted. We confirm these findings using EAGLE and IllustrisTNG simulations.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Cortese, Luca, Supervisor Obreschkow, Danail, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	14 Mar 2024
DOIs	https://doi.org/10.26182/h8bj-rv05
Publication status	Unpublished - 2023

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10.26182/h8bj-rv05

THESIS - DOCTOR OF PHILOSOPHY - HARDWICK Jennifer Alyce - 2023
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3 Article

Exploring the angular momentum - atomic gas content connection with eagle and IllustrisTNG
Hardwick, J. A., Cortese, L., Obreschkow, D., Lagos, C., Stevens, A. R. H., Catinella, B. & Garratt-Smithson, L., 1 Nov 2023, In: Monthly Notices of the Royal Astronomical Society. 526, 1, p. 808-819 12 p.
Research output: Contribution to journal › Article › peer-review

Open Access
2 Citations (Scopus)
xGASS: characterizing the slope and scatter of the stellar mass - angular momentum relation for nearby galaxies
Hardwick, J. A., Cortese, L., Obreschkow, D., Catinella, B. & Cook, R. H. W., 1 Jan 2022, In: Monthly Notices of the Royal Astronomical Society. 509, 3, p. 3751-3763 13 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
20 Citations (Web of Science)

47 Downloads (Pure)
xGASS: the connection between angular momentum, mass, and atomic gas fraction in nearby galaxies
Hardwick, J. A., Cortese, L., Obreschkow, D. & Catinella, B., 1 Nov 2022, In: Monthly Notices of the Royal Astronomical Society. 516, 3, p. 4043-4051 9 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
12 Citations (Scopus)

72 Downloads (Pure)

Cite this

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title = "Angular momentum and atomic gas: their connection in the local Universe in observations and simulations",

abstract = "This thesis focuses on nearby galaxies from the xGASS survey and investigates the relationship between their angular momentum (j) and atomic gas content (f_atm). We find the j-mass relation slope depends on the sample's distribution of morphologies and show that f_atm is the strongest correlated parameter with this relations scatter. Despite the Obreschkow et al. 2016 model making similar predictions, we find our data deviates from its predictions. Instead, at fixed f_atm, the j vs. M slope is shallower than predicted. We confirm these findings using EAGLE and IllustrisTNG simulations.",

keywords = "Astronomy & Astrophysics, Extragalactic Astronomy, Galaxy Evolution, Galaxy ISM, Galaxy Kinematics, HI Surveys, Cosmological Simulations",

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year = "2023",

doi = "10.26182/h8bj-rv05",

language = "English",

school = "The University of Western Australia",

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AB - This thesis focuses on nearby galaxies from the xGASS survey and investigates the relationship between their angular momentum (j) and atomic gas content (f_atm). We find the j-mass relation slope depends on the sample's distribution of morphologies and show that f_atm is the strongest correlated parameter with this relations scatter. Despite the Obreschkow et al. 2016 model making similar predictions, we find our data deviates from its predictions. Instead, at fixed f_atm, the j vs. M slope is shallower than predicted. We confirm these findings using EAGLE and IllustrisTNG simulations.

KW - Astronomy & Astrophysics

KW - Extragalactic Astronomy

KW - Galaxy Evolution

KW - Galaxy ISM

KW - Galaxy Kinematics

KW - HI Surveys

KW - Cosmological Simulations

U2 - 10.26182/h8bj-rv05

DO - 10.26182/h8bj-rv05

M3 - Doctoral Thesis

ER -

Angular momentum and atomic gas: their connection in the local Universe in observations and simulations

Abstract

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Research output

Exploring the angular momentum - atomic gas content connection with eagle and IllustrisTNG

xGASS: characterizing the slope and scatter of the stellar mass - angular momentum relation for nearby galaxies

xGASS: the connection between angular momentum, mass, and atomic gas fraction in nearby galaxies

Cite this