University of Groningen
Kinematics and stellar populations of dwarf elliptical galaxies Mentz, Jacobus Johannes
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Publication date: 2018
Link to publication in University of Groningen/UMCG research database
Citation for published version (APA):
Mentz, J. J. (2018). Kinematics and stellar populations of dwarf elliptical galaxies. Rijksuniversiteit Groningen.
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Propositions
accompanying the dissertation
Kinematics and stellar populations of dwarf elliptical galaxies
1. The study of dwarf galaxies, which can open up an important window on galaxy formation, needs to be performed observationally using powerful in-strumentation to the limits of their capabilities (Chapters 2-4)
2. In early-type galaxies, a strong correlation is found between [Na/Fe] and [Fe/H] ranging from the dwarf to the giant regime (Chapter 2)
3. Evidence of a non-universal IMF is starting to emerge with the appearance of more detailed IMF studies of early-type dwarf galaxies, where, contrary to giant galaxies, no evidence is found for a bottom-heavy IMF (Chapter 2) 4. To study the detailed stellar population and kinematic properties of dwarf
galaxies in clusters it is necessary to combine very deep integral-field spectro-scopic observations with large cluster wide surveys (Chapters 2-4)
5. Increasing evidence points to the idea that current-day dwarf early-type galax-ies originated from transformed late-type galaxgalax-ies that underwent pre-processing in groups after which they migrated to clusters (Chapters 3-4)
6. The presence of long tails, which are currently being discovered in many galaxies in cluster environments, present direct evidence for the removal of gas and stars from galaxies. This provides evidence, complementary to the material being discussed in this thesis, on how galaxies are transformed when entering the cluster environment
7. Scientific advancement is often hampered by individual desire for acknowl-edgement rather than a more effective collaborational effort
8. The rise and popularity of social media is a challenging factor to current and upcoming generations, not only in terms of social interaction but also with respect to informed opinion and decision making
