Essays about: "Brian Thorsbro"

Found 1 essay containing the words Brian Thorsbro.

  1. 1. A kinematic check of the distance scale of Galactic Cepheids

    University essay from Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Brian Thorsbro; [2014]
    Keywords : cepheid; period-luminosity relation; distance scale; kinematics; Physics and Astronomy;

    Abstract : A selection of well known period luminosity relations for cepheid variables are studied under the assumption that cepheid variables have a mean vertical velocity of zero in the galactic plane. Proper motion data from Hipparcos and Thyco-2 catalogues are coupled with the distances obtained from applying the period luminosity relations on a database of known classical cepheids to calculate the velocities of the cepheids. READ MORE