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- W3104457800 abstract "During the first billion years of the Universe, the first galaxies formed and ionized the neutral inter-galactic medium. Observations of rest-frame ultraviolet and optical spectra of galaxies into the reionization epoch will soon be possible with the help of the James Webb Space Telescope. The light emitted by these galaxies contains valuable information about their physical properties, in particular, the characterisation of the sources that were able to reionize the Universe. We explore physically self-consistent models of star-forming galaxies, including the influence of stellar multiplicity on the production of ionizing photons by young stellar populations, the leakage of Lyman-continuum photons from density-bounded HII regions and the contribution by an active galactic nucleus and radiative shocks to nebular emission. We compare these models with a sample of metal-poor star-forming galaxies – whose properties are expected to approach those of primeval galaxies – and Lyman-continuum leakers at various redshifts, in a collection of ultraviolet and optical emission-line diagnostic diagrams. From this analysis, we investigate how we can learn about the nature of the ionizing sources and the leakage of ionizing photons in such galaxies. We also present preliminary tests of the implementation in progress of the emission from narrow-line regions of active galactic nuclei in a spectral interpretation tool." @default.
- W3104457800 created "2020-11-23" @default.
- W3104457800 creator A5045668034 @default.
- W3104457800 date "2019-09-20" @default.
- W3104457800 modified "2023-09-25" @default.
- W3104457800 title "Modeling and interpretation of spectral properties of primeval galaxies" @default.
- W3104457800 hasPublicationYear "2019" @default.
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