Astronomy and Astrophysics – Astronomy
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.187..357e&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 187, May 1979, p. 357-370.
Astronomy and Astrophysics
Astronomy
11
Astronomical Models, Cosmology, Galactic Radiation, Galactic Evolution, Luminous Intensity, Red Shift
Scientific paper
The basic theory of the variation of galactic flux with redshift is reviewed, and explicit expressions are given for the observed magnitude and average surface brightness as functions of the space-time parameters and intrinsic galaxy brightness. It is shown that a 'correctionless' approach to the measurement of galactic magnitudes can be achieved if the theoretical concept of an 'absolute magnitude' is abandoned and the theory is recast in terms of quantities that correspond much more closely to the measurements actually made. It is concluded that no matter how the observations are made and analyzed, a full interpretation is not possible without explicitly considering limits on both galactic radial evolution and galactic brightness evolution.
Ellis George F. R.
Perry Jonathan
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