PhD defence

Molecular Diagnostics of Dense Regions in Nearby Galaxies

• J.J. Butterworth

Date

Thursday 1 May 2025

Time

14:30 - 15:30 hour

Address

Academy Building
Rapenburg 73
2311 GJ Leiden

Supervisor(s)

• Prof.dr. S. Viti

Summary

This research delves into a region of space known as the interstellar medium (ISM), which is essentially the area between the stars filled with gas and dust. This region is crucial because it's where stars are born and later, where they release materials back into space after their life cycle ends.

The study focuses on understanding how different gases behave in the ISM and how they can tell us about the activities happening in a galaxy, like star formation or the influence of black holes. By examining specific molecules like Hydrogen Cyanide and Carbon Monoxide, we can detect where black holes are affecting the ISM.  Also, by studying variations in these molecules, we gain insights into the ongoing chemical changes and processes that drive the evolution of galaxies. Using advanced tools and techniques, this thesis provides a detailed look at these molecular interactions, helping to distinguish between areas in space influenced by different cosmic activities. This approach offers a new way of observing and understanding the intricate dynamics of galaxies, which are far too distant to study up close.

Overall, the findings help us better understand the vast and complex space between stars, providing clearer insights into the life cycle of galaxies and the cosmic forces that shape our universe. This enhances our broader comprehension of space, contributing to the ongoing exploration and discovery in astronomy.

PhD dissertations

Approximately one week after the defence, PhD dissertations by Leiden PhD students are available digitally through the Leiden Repository, that offers free access to these PhD dissertations. Please note that in some cases a dissertation may be under embargo temporarily and access to its full-text version will only be granted later.

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