Mass-to-energy relations for galaxies and clusters of galaxies

Details Mass-to-energy relations for galaxies and clusters of galaxies Mass-to-energy relations for galaxies and clusters of galaxies

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....99....7k&link_type=abstract

Astronomy and Astrophysics, vol. 99, no. 1, June 1981, p. 7-16.

Astronomy and Astrophysics

Astrophysics

7

Elliptical Galaxies, Galactic Clusters, Kinetic Energy, Mass Ratios, Spiral Galaxies, Astronomical Models, Galactic Structure

Scientific paper

A statistical relation between the total energies E and masses M of galaxies and clusters of galaxies of H the form
g ≡ E2/GM3
is a constant, is found. Within each class of objects this law holds. The constant g has the dimension of an acceleration and its value is (5.6 ± 0.9) × 10-12 m/s2 for spiral galaxies (5.6 ± 0.4) × lO-11 m/s2 for ellipticals and (1.07 ± 0.15) × l0-11 m/s2 for clusters of galaxies. The relation holds over at least 9 decades of energy. The dispersion of individual objects about this relation is only 110% for spirals, 45% for ellipticals and 70% for clusters. Seyfert's and cE-galaxies seen to have a somewhat different g.

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