New discovery in a nearby galaxy

New discovery in a nearby galaxy

In a nearby spiral galaxy type M83, scientists were able to detect an extraplanar diffuse ionized gas.

The galaxy began to appear in general catalogs since 1752. This is a bridged spiral type, removed by 1.56 million light years. It is considered one of the closest and brightest galaxies.

M83 has a complex multi-phase halogen. The presence of gas in such halos is considered an important event, because it helps to understand the formation of stars. Most likely, it comes from the reservoir in halos and is transferred to objects as a building material.

Because of the temperature mark of 1000K, it is called an ultra-flat diffuse ionized gas. It differs in characteristics from gases in the regions of stellar birth. In M83, it was possible to describe its kinematics through a spectrograph on the South African large telescope. Found due to the ratios of emission lines, velocity dispersion and delayed rate of rotation. The average line-of-sight speed is higher in the diffuse gas than in our galaxy. That is, the velocity dispersion can be anisotropic.

Also diffuse rays are behind the discretization. Scientists decided that the dispersion of the layer velocity in the gas found is consistent with the sound in the hot phase, and the lag in the rotational speed is seen in the cold and warm components.

Researchers go to analyze the kinematics in various galaxies to make a comparison.

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