Essays about: "Milky Way"

Showing result 21 - 25 of 74 essays containing the words Milky Way.

  1. 21. The magnetic fields of exoplanet hostM-dwarf stars : The magnetic fields of exoplanet hostM-dwarf stars

    University essay from Uppsala universitet/Teoretisk astrofysik

    Author : Thomas Herard; [2021]
    Keywords : ;

    Abstract : The majority of stars in the Milky Way are M dwarfs whichmake up 75 % of stars in the vicinity of the sun. As the magneticfield of stars can significantly affect the interiors and theatmospheres of the exoplanets they host within the stellar system,characterising this magnetic field is of major importance. READ MORE

  3. 22. Magnificent beasts of the Milky Way: Hunting down stars with unusual infrared properties using supervised machine learning

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Julia Ahlvind; [2021]
    Keywords : machine learning; supervised machine learning; support vector machine; photometry; stars; stellar physics; astronomical archives;

    Abstract : The significant increase of astronomical data necessitates new strategies and developments to analyse a large amount of information, which no longer is efficient if done by hand. Supervised machine learning is an example of one such modern strategy. READ MORE

  4. 23. 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 astrofysik

    Author : Amanda Byström; [2021]
    Keywords : Milky Way; Galactic archaeology; halo; photometric metallicities; stellar catalogue; giant stars; distance calculations; Pristine survey; Gaia mission; metallicity distribution;

    Abstract : 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

  5. 24. Towards a high resolution view of infrared line formation

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Martin Schmidt Montelius; [2021]
    Keywords : Spectroscopy; Near infrared; K giants; Galactic archeaology; Galactic chemical evolution; Abundances; Milky Way; Physics and Astronomy;

    Abstract : Observing in the infrared has many benefits, such as seeing through the interstellar dust in the galaxy, easier use of adaptive optics, and better flux ratios for direct observations of exoplanets. Before the infrared spectral range can be utilised for highly accurate stellar spectroscopy there is a need for a better understanding of both stellar modelling and the atomic physics that go into forming spectral lines. READ MORE

  6. 25. The Milky Way and its Exoplanets

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Jesper Nielsen; [2021]
    Keywords : Planets and Satellites; Exoplanets; Occurrence Rates; Physics and Astronomy;

    Abstract : 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