Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxac..17...43r&link_type=abstract
Galaxy Evolution: Theory & Observations (Eds. Vladimir Avila-Reese, Claudio Firmani, Carlos S. Frenk & Christine Allen) Revista
Astronomy and Astrophysics
Astronomy
Galaxy: Halo, Galaxy: Kinematics And Dynamics, Stellar Dynamics
Scientific paper
A family of potential-density pairs has been found for spherical halos and bulges of galaxies within the Newtonian limit of scalar-tensor theories of gravity. The scalar field is described by a modified Helmholtz equation with a source that is coupled to the standard Poisson equation of Newtonian gravity. Then, the net gravitational force is given by two contributions: the standard Newtonian potential plus a term stemming from massive scalar fields. General solutions have been found for spherical systems. Hence, we compute potential-density pairs of spherical, galactic systems, and their associated circular velocities
Cervantes-Cota Jorge L.
Rodriguez-Meza Mario A.
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