Essays about: "metallicity distribution"
Showing result 1 - 5 of 14 essays containing the words metallicity distribution.
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1. The Metallicity Structure of the Milky Way Halo II : Characterising the distant halo substructure
University essay from Uppsala universitet/Observationell astrofysikAbstract : The Milky Way galaxy, like all spiral galaxies, is surrounded by a roughly spherical distribution of stars called the halo. The halo was largely formed when the galaxy merged with smaller galaxies. READ MORE
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2. The Metallicity Structure of the Milky Way halo I : Creating a stellar catalogue of the distant halo’s red giants
University essay from Uppsala universitet/Observationell astrofysikAbstract : The Milky Way's halo is an approximately spherical distribution of stars surrounding the Galaxy that carries the history of the Milky Way. The outer halo is a Galactic region with long dynamical timescales largely built up by accreted material. READ MORE
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3. The Milky Way and its Exoplanets
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : The detections of over 4000 exoplanets as of today has shown that they exist in a wide range of different configurations, otherwise known as architectures. Recently, studies have been made trying to link the environment of host stars to the architectures of their planetary systems and have found that the architectures of planetary systems may not necessarily be uniform in the Milky Way. READ MORE
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4. Stars Eating Planets
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : In a phase of instability during the dynamical evolution of some multiple exoplanetary systems, exchange of angular momentum and/or energy through gravitational interactions between planets will lead to alterations of their orbital properties. In some cases, planetary orbits end up crossing, which leads to close encounters between two planets. READ MORE
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5. Do variations in the initial mass function affect galaxy evolution?
University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisationAbstract : The initial mass function (IMF) describes the stellar mass distribution for a population of stars at birth. This parameter represents a topic of long standing discussion within astronomy due to its apparent insensitive nature to environmental conditions. However, in the last decade, significant evidence suggesting the contrary has been presented. READ MORE
