University of Groningen
On the complex stellar populations of ancient stellar systems
Savino, Alessandro
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Publication date: 2018
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Savino, A. (2018). On the complex stellar populations of ancient stellar systems. University of Groningen.
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Propositions
accompanying the dissertation
On the complex stellar populations of ancient
stellar systems
1. The availability of multiple independent tracers of the same astrophysical quan-tity is a powerful tool to identify possible systematic effects in scientific analyses. (Chapter 2)
2. The combined analysis of the horizontal branch and main sequence turn-off regions is of great help in breaking the age-metallicity degeneracy in the inter-pretation of colour-magnitude diagrams. (Chapter 3)
3. Distinct star formation events are a common feature in the early history of Local Group dwarf spheroidal galaxies. (Chapters 2, 3, 4)
4. Dwarf galaxies are much better laboratories to study red giant branch mass loss than globular clusters. (Chapters 2, 3, 4)
5. Medium band photometry is an effective way to trace strong molecular features in the spectra of a large sample of stars. (Chapter 5)
6. For the foreseeable future the accurate interpretation of the horizontal branch is the only way to dramatically increase the number of star formation history derivations, going back to ancient times, in resolved galaxies. (Chapter 6)
7. The conceptual elegance and efficiency of the scientific method are hindered by the limitations, desires and necessities of people carrying out scientific research.
8. The history of cultures, like the Universe, follows hierarchical assembly. There will come a day when borders will no longer be necessary.
9. Most human behaviour is driven by instinctual mechanisms encoded in our brain by evolution. A trained mind is the best tool to acquire control over those mechanisms and approach free will.
10. One’s perception of the world is determined by the chaotic set of genetic and en-vironmental conditions that shapes personality and it is only one among count-less incomplete interpretations of reality.
