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But as the process of star formation is continuing in the center of an elliptical galaxy, in which, the gas is compressed (packed) in the amount of stars, the galaxies in the volume of the galaxy there must be a shortage of gas, which will eventually lead to the formation of a vacuum, despite the high temperature (energy) internal gas. Perhaps because of the resistance of the hot gas, the cold gas, on the border of the meeting, is forming a gaseous disk around the elliptical galaxy, with a subsequent shift in the lens and spiral galaxies.

Conclusions:

On the expense of the «work» of the «black hole», which sucks gas, but after the explosion throws it, already packed in the stars, discharged volume is being created (volume of the vacuum) inside an elliptical galaxy, around the «black hole». This vacuum sucks in a gas and dust from space, and the stars are being ejected into space and, as well as partially hot gas.

– Lens and spiral galaxies.

We reviewed the elliptical galaxies. Lens galaxies are a similar to the elliptical galaxy type, its halo, bulge, and the existence of a disk without spiral arms, makes them similar to spiral galaxies.
The structure of lens galaxies can be roughly divided into two parts, the spherical – a halo and flat – a disc.
    – The same analysis is valid for the spherical parts of lens and spiral galaxies, and the same conclusions goes for elliptical galaxies, since there are the same processes going in spherical parts, elliptical, lens and spiral galaxies.
    – The flat part – the disk, we’ll try to consider and analyze now.
Going a little forward, I want to suggest the following:
    – The evolution of an elliptical galaxy passes through its transformation into the lens, and then into spiral galaxy.
Perhaps the further evolution of galaxies is leading to the formation of certain types of irregular galaxies.
This proposal is based on the forecast of possible developments in the evolution of elliptical galaxies, and on the analysis of data, gathered during the study of the major morphological groups of galaxies.

Distribution of radiation in spiral galaxies

  The distribution of brightness in the disks of spiral galaxies has a mathematical regularity. The brightness decreases while distancing from the center of the galaxy, in accordance with the mathematical relation, which differs from the mathematical relationship for elliptical galaxies (Illustration № R-10.4). In all spiral galaxies, the distribution of radiation in the disk is always following this pattern. 

   As it seen on illustration № R-10.5, the schedule of the distribution of the radiation in an elliptical galaxy fits well with the schedule of distribution of the radiation in spiral galaxies, which confirms our hypothesis about the evolution of elliptical galaxies into spiral galaxies. The middle part of the schedule of «the radiation distribution» in spiral galaxies does not coincide with the schedule of an elliptical galaxy. This part of the graph corresponds to the distribution of radiation in the disk of spiral galaxies. The schedule of the radiation returns to the regularities of distribution of the radiation in elliptical galaxies – beyond the aisles disk in a spiral galaxy. We shall predict the chain of events in the development of an elliptical galaxy.

The «black hole» in the center of an elliptical galaxy collects and compresses the gas and dust into stars, as a result of dynamic processes, nuclear explosion or a series of nuclear explosions, these stars emit from the center of an elliptical galaxy. The ejection of the stars from the center of an elliptical galaxy is leading to shortages of gas in the center of the galaxy. This gas shortage must replenish from outer space around this galaxy. The amount of space around the galaxy is wider than the amount of the galaxy itself. Hence, the motion of gas from increased amount to a lesser one is increasing its density. We are aware of similar processes in liquids and gases. They are accompanied by the formation of vortices and «sinks». In our case, we observe similar phenomena in the form of gaseous disks in lens galaxies and in the formation of gas discs and sleeves in spiral galaxies. And if we take into account the fact of the resistance of the stellar wind of the heliosphere stars and the hot gas inside the volume of the galaxy, the formation of the gaseous disk and sleeves quite natural.

In order to understand the physics of disk and sleeves formation in lens and spiral galaxies, it is necessary to find the cause of their formation.

Under the influence of which physical phenomena were they formed? And where these physical phenomena occur?

Judging by the fact that the discs and the sleeves surrounding the center of galaxies uniformly, we can conclude that it is in the center of galaxies and the physical phenomena under the action of which discs and sleeves have been formed occur in the center of the galaxy. In the center of lens and spiral galaxies there are «black holes» with «accretion disks».

Consequently, the «black hole», «accretion disk» and the physical processes around them are the reason for the formation of the disks and the sleeves.

Let’s at least partly predict and analyze the physical events in the formation of discs and sleeves.

We have already examined the processes taking place in an elliptical galaxy, in the «black hole» and in the «accretion disk». The gas is being sucked into the volume of «accretion disk», thus creating a vacuum in the center of the galaxy.

In this volume the vacuum the gas is sucked from the galaxy and from the surrounding space. The gas from outer space is moving in the direction of the galactic center. With the development of this process, up to certain parameters, the process of absorption of gas from outer space takes the form similar to a whirlwind or a water funnel, but larger than the «accretion disk» around the «black hole». What are the parameters of the gas suction in the center of the galaxy can affect the formation of the disc and sleeves?

– If you look at the illustration № R-10.5, we see that the disc and sleeves of the galaxy are not formed at the edges of the elliptical galaxy, but inside of it. Why? 

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