A simple model for the distribution of light in spherical galaxies

Details A simple model for the distribution of light in spherical galaxies A simple model for the distribution of light in spherical galaxies

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202..995j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 202, Mar. 1983, p. 995-999. Research supported by the Nederlandse Organ

Astronomy and Astrophysics

Astronomy

320

Astronomical Models, Brightness Distribution, Galactic Radiation, Gravitational Fields, Light Emission, Surface Properties

Scientific paper

The present analytic formula for spherical galaxy three-dimensional light distribution yields a fit with measured brightnesses which compares favorably with existing models, despite its simplicity. Surface brightness, gravitational potential and projected velocity dispersion can be straightforwardly computed by means of the formula, whose asymptotic behavior for large and small radii is sufficiently simple to invite speculative physical interpretations.

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