Sökning: "Galaxer"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet Galaxer.

  1. 1. Disputatio physica de galaxia qvam, indultu amplissimi philosophorum ordinis illustri Upsaliensium Athenæ regio, sub præsidio ... Haraldi Wallerii ... ad placidum bonorum examen, d. 23. Junii Anni MDCXCII Jn audit. Gust. maj. horis solitis, modeste defert Petrus And. Griise Hels

    Författare :Harald Vallerius; Pehr Grise; Harald Vallerius; Uppsala universitet; []
    Nyckelord :Galaxies; Galaxer;

    Sammanfattning : .... LÄS MER

  3. 2. Quasars and Low Surface Brightness Galaxies as Probes of Dark Matter

    Författare :Erik Zackrisson; Nils Bergvall; Kjell Olofsson; Julianne Dalcanton; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Cosmology: dark matter; gravitational lensing; quasars: general; quasars: redshift; galaxies: halos; galaxies: formation; galaxies: stellar content; Astronomi; Astronomy and astrophysics; Astronomi och astrofysik;

    Sammanfattning : Most of the matter in the Universe appears to be in some form which does not emit or absorb light. While evidence for the existence of this dark matter has accumulated over the last seventy years, its nature remains elusive. LÄS MER

  4. 3. Ionized and atomic interstellar medium in star-forming galaxies

    Författare :Thøger Emil Rivera-Thorsen; Göran Östlin; Matthew Hayes; Dawn Erb; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; astronomi;

    Sammanfattning : Star forming galaxies in the local Universe are an important laboratory for learning about conditions in the distant, early Universe. With a high frequency of interactions and mergers, strong star formation activity, and complex kinematics and often disturbed or irregular morphology, these galaxies are believed to be the best local analogs to the galaxies at early times, and can therefore help understand the galaxies we observe at high redshifts in the early Universe. LÄS MER

  5. 4. Photometry of Resolved Stellar Populations in Local Group Galaxies

    Författare :Daniel Faria; Astronomi - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomi; Astronomy; Local Group; Galaxy: halo; Galaxies: dwarf; Galaxy: stellar content; Galaxies: photometry; Techniques: photometric; Stars: fundamental parameters;

    Sammanfattning : This thesis presents results from two projects using photometric observations to investigate stellar populations in Local Group galaxies. In the first project, Strömgren photometry is used to study stellar populations in dwarf spheroidal galaxies. LÄS MER

  7. 5. Investigating the potential of current and future neutrino detectors to identify the sources of the astrophysical neutrinos seen by IceCube

    Författare :Maryon Ahrens; Chad Finley; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : High energy neutrino astronomy aims to view the universe with a new messenger, the neutrino. This messenger provides another window onto the universe, complementing what we can learn from photons, cosmic rays, and gravitational waves. LÄS MER