Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Stars, gas, and dust at high resolution in the triangulum galaxy

Williams, Thomas George ORCID: 2019. Stars, gas, and dust at high resolution in the triangulum galaxy. PhD Thesis, Cardiff University.
Item availability restricted.

[thumbnail of 2019WilliamsTPhD.pdf]
PDF - Accepted Post-Print Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (23MB) | Preview
[thumbnail of Cardiff University Electronic Publication Form] PDF (Cardiff University Electronic Publication Form) - Supplemental Material
Restricted to Repository staff only

Download (105kB)


This thesis investigates the interplay between dust, gas, and stars at high resolution in nearby Local Group galaxy M33. Using panchromatic spectral energy distribution (SED) fitting along with ancillary gas tracer data, the star formation law is studied at scales of 100pc. A strong scale dependence is seen in the fitted power law index no matter which gas tracer is used, and whilst correlations between each tracer of gas and SFR remain strong, the correlation between SFR and molecular gas is strongest, perhaps indicating that the molecular gas is the more important driver of star formation. A catalogue of Giant Molecular Clouds (GMCs) is extracted from sub-millimetre wavelength data. These clouds have a much lower gas-to-dust ratio (GDR) than found in the Milky Way. The mass function of these clouds follows a slope proportional to M

Item Type: Thesis (PhD)
Date Type: Completion
Status: Unpublished
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Astronomy, Galaxy Evolution, Star Formation, ISM, Radiative Transfer
Date of First Compliant Deposit: 17 December 2019
Last Modified: 04 Nov 2022 13:51

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics