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Table of contents
Resume
1 Introduction
1.1 Historical context
1.2 Early epochs of the Universe
1.3 Galaxy types
1.4 Components of a Galaxy
1.4.1 Classication of stars
1.4.2 The ISM: components and phases
1.4.3 Physical processes in the ISM
1.5 Chemical content of a galaxy
1.6 Galaxy spectral energy distributions
1.7 Future observing facilities
1.8 Outline
2 Modeling spectral energy distributions of galaxies
2.1 Stellar emission
2.1.1 Stellar population synthesis codes
2.1.2 Evolutionary tracks
2.1.3 IMF
2.1.4 Stellar spectral libraries
2.2 Absorption and emission in the ISM
2.2.1 Photoionization code: CLOUDY
2.2.2 General spectrum synthesis code: SYNSPEC
2.2.3 Summary of the modeling
2.3 The star formation history of galaxies
3 Calibration of the SSP models in the ultraviolet
3.1 Introduction
3.2 Ultraviolet signatures of young stellar populations
3.2.1 Stellar population synthesis modelling
3.2.2 Ultraviolet spectral indices
3.2.3 Dependence of index strength on age, metallicity and integrated stellar mass
3.2.4 Associated broadband magnitudes
3.3 Interpretation of ultraviolet star-cluster spectroscopy
3.3.1 Observational sample
3.3.2 Model library
3.3.3 Age, metallicity and stellar-mass estimates
4 Inuence of the ISM on ultraviolet spectra of star-forming galaxies
4.1 ISM modelling
4.1.1 Approach
4.1.2 Examples of model spectra
4.2 Ultraviolet tracers of stars and the ISM
4.2.1 Features tracing young stars
4.2.2 Features tracing nebular emission
4.2.3 Features tracing interstellar absorption
4.2.4 Important composite features
5 On statistical tools for galaxy SED-tting
5.1 Standard methodology
5.2 In this work: BEAGLE.
6 Results from galaxy SED-tting with BEAGLE
6.1 Ly and Ciii] emission in z = 7 − 9 galaxies: accelerated reionization around luminous star-forming systems?
6.2 The three most metal-poor nearby galaxies
6.3 10 nearby galaxies with hard optical spectra
7 Conclusions and perspectives
Appendices
A Ultraviolet stellar absorption-line indices
B Correction of ultraviolet index strengths for Galactic absorption
C P-Cygni proles
Bibliography
