Study of the radiation emitted by the nuclei of spiral galaxies

The distribution of the U-B, B-V, J-H, and H-K colors of the central regions of galaxies with different estimates of the Biurakan classification is studied. It is shown that in the nuclear regions of many galaxies with estimates 5 and 2s, and also 2 and 4, there is an ultraviolet excess. In the nucl...

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