Essays about: "Galaxy: disk"
Showing result 21 - 25 of 32 essays containing the words Galaxy: disk.
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21. Investigating Gas Turbulence in Galactic Discs
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : The interstellar medium of both local and distant disc galaxies is observed to be supersonically turbulent and the turbulent motion of the gas is thought to be important for galaxy formation and evolution, particularly as a key ingredient for star formation. Consequently, this generates a striking relation between the star formation rate (SFR) and gas velocity dispersion ($\sigma_{\rm g}$; a measurement on the level of turbulence). READ MORE
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22. Can tidal interactions produce MGC1?
University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisationAbstract : The globular cluster population of large spiral galaxies can be divided into two populations: one population which formed in-situ and one which has been assembled through capture of clusters that have been tidally stripped away from other galaxies during close encounters or mergers. In this work, I focus on the globular cluster MGC1, which is orbiting the M31 galaxy. READ MORE
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23. Abundances of iron-peak elements in disk and bulge giant stars from high-resolution optical spectra
University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisationAbstract : Context. The formation and evolution of the Galactic bulge and the Milky Way is still a debated subject. Observations of, e.g. READ MORE
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24. Nucleosynthesis in accretion disks around black holes
University essay from Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Nucleosynthesis is the mechanism which produces new elements in nuclear reactions. Nuclear reaction rates are highly temperature dependant, and nuclear reactions take place in very hot environments. Current theories predict that the light elements such as hydrogen and helium were produced during the Big Bang. READ MORE
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25. The status of neutron-capture elements according to Gaia-ESO.
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : The aim of this thesis is to get a better understanding of the evolution of the Milky Way stellar disc by looking at the abundance ratios for neutron-capture elements in thin and thick disc stars. In this project the formation of our Galaxy’s thin and thick disc was studied by analysing 10 different neutron-capture elements in field stars measured by Gaia-ESO. READ MORE
