Mathematics – Dynamical Systems
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997kfnt...13b..32b&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, vol. 13, p. 32
Mathematics
Dynamical Systems
Milky Way Galaxy, Galactic Halos, Gas Dynamics, Baryons, Hydrogen Clouds, Dynamical Systems, Astronomical Models
Scientific paper
Recent observational data indicate that, besides the nonbaryonic component, the halo of our Galaxy contains a significant fraction of baryonic matter. The time evolution of the galactic disk surface density depends strongly on baryonic halo properties. In order to estimate its parameters, we have carried out numerical simulations of the evolution of the galactic system having an additional baryonic halo in the form of 'invisible' small hydrogen clouds. It was found that only a model with a baryonic halo having an initial mass of 2 x 10 exp 11 solar masses and a flat rotation curve fits well the galactic disk properties in the solar cylinder.
Berczik Peter
Kravchuk Sergei G.
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