V.4 No 1

67

On orbital stability of oscillators

Taking the described into account, we can emphasise the main distinctive features of non-compact galaxies.

First, the galaxies of this kind have usually several charge centres and due to this, several spiral arms. The structure of these arms basically does not differ from spiral arms of galaxies having a single charge centre, only the distance between the maximums of scalar potential is inversely proportional to the number of arms. To illustrate the said, in Fig. 26 we show the dynamic diagram of spiral arms formed by two charge centres rotating in antiphase along the common trajectory.

Fig. 26. Distribution of dynamic scalar potential excited in the surrounding space by a celestial object having two charge centres rotating along the common trajectory in antiphase. The size of studied region is 2000 light years, period of the object's orbiting T=900 years

The parameters and method to plot this diagram are similar to that in Fig. 12.

Second, because the nucleus formation occurs by way of redistribution of the galactic mass, in its peripheral part, along with the young stars, old stars are present. This will naturally have an effect on the appearance of spiral arms. If in compact galaxies, as we saw above, young stellar systems formation goes through concentration of gas-dust medium of periphery up to the density determined by the Shklovsky's condition [24, p. 57]

(42)

(where R₁ is the radius of gas-dust cloud, is the average density of the cloud, G is the gravity constant, M is the mass of cloud, A = 8,3*10⁷ erg/mol*Kelvin, T is the temperature of cloud, M  is the mass of the Earth), in non-compact galaxies the presence of old stars will slow down the formation of young stars. With it the size of these old stars will grow, because in the arms they will work as the dust absorber, and we will observe in disks of such galaxies old stars in quite dense shroud of interstellar dust, as we see it well in Fig. 24 and 25.

Third, in non-compact galaxies the charge distribution in arms and between them causes that the most hot - it means, more positively charged nuclei - will make clusters just in the arms, and old - which means, less hot and having less non-compensated charge nuclei - will make clusters between the arms. To be fully correct, we should mark that old compact galaxies also can have old cooling stars between the arms. This can take place due to the gradual compensation of charge and because the star leaves the arm in which it has formed. In particular, our Sun evidences it. The very fact that in the planetary system of the Sun we find all chemical elements tells us that our star had a very long way of evolution and relates just to old stars. Just so the Sun lays between the arms of our Galaxy.