Essays about: "Timmy Ejdetjärn"

Found 2 essays containing the words Timmy Ejdetjärn.

  1. 1. Investigating Gas Turbulence in Galactic Discs

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Timmy Ejdetjärn; [2019]
    Keywords : galaxies; gas; turbulence; interstellar medium; star formation; feedback; gravitational instability; local; high redshift; Physics and Astronomy;

    Abstract : 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

  3. 2. Constraining the Potential of the Milky Way using Stellar Streams

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Timmy Ejdetjärn; [2017]
    Keywords : stellar streams; Milky Way; potential; confidence region; orbital approximation; MW; CR; halo; disc; constrain; mass; orbit; simulation; simulated; fitting; likelihood; Physics and Astronomy;

    Abstract : The orbital approximation for stellar streams is the assumption that all stars in a stream can be described as following the same orbit. In this thesis, I evaluate this approximation as a method for constraining the potential of the Milky Way. READ MORE