FORMER RESEARCH PROJECTS
Project |01
Formation of spectral lines of MgH in 3D model atmospheres
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In this project we studied how the shape and strength of synthetic MgH lines changed when applying state-of-the-art 3D hydrodynamical model atmospheres, as opposed to traditional 1D stellar atmospheres. Since convection affects lineshapes, and this is ignored in 1D models, it may introduce a bias when deriving Mg isotopes from observations, based on these models. The paper from this theoretical study can be accessed here.
Project |02
Magnesium Isotopes in the inner Milky Way
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For this project I am studying the distribution of Magnesium isotopes in a number of stars in the inner Disk of the Milky Way, as well as in the central part of our Galaxy, the Bulge. We do still not know exactly how this part of the Galaxy formed, and looking for similarities in the chemical make-up of stars in the inner Disk and the Bulge can help answer this.
Project |03
The chemical composition of 47 Tucanae
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Here, we have been studying the chemical composition of a number of bright giant stars in the Globular Cluster, 47 Tucanae. We want to investigate whether Mg isotopes together with other elemental abundances, can help shed light on what causes phenomenon of multiple populations in globular clusters. The first part of the work is published here
and the second part can be found here.
Project |04
Atmospheric parameters of 82 red giants in the Kepler field
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In this project we combined spectroscopic observations with high-precision asteroseismic results from the NASA Kepler satellite, to derive accurate fundamental parameters and detailed abundances of a sample of 82 red giant stars. By using asteroseismology we were able to circumvent some of the problems that are present in a purely spectroscopic analysis. The published paper can be found here.