Advanced search

Found 4 essays matching the above criteria.

  1. 1. Pinning down the nature of gravitationally lensed stars at high redshift: Can Population III be identified?

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Adam Hultquist; [2021]
    Keywords : Population III; first stars; JWST;

    Abstract : .... READ MORE

  3. 2. Stellar atmosphere models for Population III stars

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Adam Hultquist; [2021]
    Keywords : Population III stellar atmosphere model;

    Abstract : The  rst stars to illuminate the universe are said to belong to a group called Population III. Having knowledge of their atmospheric conditions would be useful in many endeavours. The aimof this project was to compile and run the FORTRAN code TLUSTY (Hubeny and Lanz 2017) inorder to create stellar atmospheres for Pop III stars. READ MORE

  4. 3. Collisional broadening by hydrogenfor stellar spectroscopy : extension towards high-lying states

    University essay from Uppsala universitet/Teoretisk astrofysik

    Author : Adam Hultquist; [2019]
    Keywords : Astrophysics; Spectral line broadening; ABO; Collisional broadening;

    Abstract : The object of this thesis is to extend the current tables for two useful quantities when calculatingcollisional broadening, the cross-section of interaction and the velocity parameter.These quantities, which have hitherto been tabulated for lower states, have now been calculatedfor higher lying states and are used in the ABO - model for spectral line broadening. READ MORE

  5. 4. Spectral line broadening using ABO theory

    University essay from Uppsala universitet/Teoretisk astrofysik

    Author : Adam Hultquist; [2019]
    Keywords : ;

    Abstract : .... READ MORE