Thesis Topic: Formation and evolution histories of stellar structures in early- and late-type galaxies

 Thesis Supervisor: Dimitri Gadotti

Abstract

New technologies are enabling instruments with powerful capabilities, which in turn allow us to study how galaxies form and evolve with unprecedented detail. One of such instruments is the revolutionary MUSE Integral-Field Spectrograph on the Very Large Telescope. To study the dynamics, ages and chemical properties of stars in nearby galaxies, we are taking an extensive set of MUSE data as part of the TIMER project (https://www.muse-timer.org/) and the Fornax 3D survey (http://www.na.astro.it/Fornax3D/Fornax3D/Welcome.html). Importantly, we are thus covering wide ranges in galaxy mass, structure and environment.

Nearby galaxies contain a fossil record of their evolution through cosmic history. This PhD project will focus on developing and employing powerful techniques to extract information from the MUSE spectra to uncover the evolutionary histories of the different stellar structures that constitute a galaxy (such as discs, spheroids, bars and rings). The ultimate goal is to tell the evolutionary history of galaxies by connecting the evolutionary histories of their stellar components. (The picture is a colour composite from the Carnegie Galaxy Survey.)

More specifically, we will aim at using all information in the spectra to decompose galaxies into their stellar structures that can be separated by both their distinct stellar kinematics and distinct stellar population content. The figure shows for example NGC 1433, one of the TIMER galaxies, which exhibits a rich variety of structural components formed by stars with different age distributions and dynamics.

The student will thus have access to state-of-the-art data and benefit immensely from interactions with members of the TIMER and Fornax 3D collaborations.

 

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