Scalecovariant stellar dynamics.
Abstract
Scalecovariant gravitation theory, as developed in former papers (Dirac, 1973; Canuto et al., 1977; Bouvier and Maeder, 1978; Maeder and Bouvier, 1978), is examined here with respect to the dynamics of a particle, either free in curved spacetime, or either free or submitted to a weak gravitational field in a flat spacetime which is conformally equivalent to the Minkowski spacetime. The theory is further extended, adopting a scale factor varying as the inverse of time, to the Newtonian dynamics of selfgravitating systems of particles, namely stellar systems. The usual laws of conservation become then laws of secular evolution, when written in the atomic units in which all the measurements are performed. As a consequence of these developments, an explanation is proposed of the mass excess dilemma met in extended cosmic configurations.
 Publication:

Astronomy and Astrophysics
 Pub Date:
 October 1979
 Bibcode:
 1979A&A....79..158B
 Keywords:

 Covariance;
 Gravitation Theory;
 Particle Motion;
 SpaceTime Functions;
 Stellar Motions;
 Stellar Systems;
 Conservation Laws;
 Metric Space;
 Newton Theory;
 Particle Theory;
 Relativity;
 Astrophysics;
 Cosmology:Stellar Evolution;
 Relativity Theory:Stellar Dynamics