Hot diffuse Gas in the galaxy group IC4329
The contours of a ROSAT HRI observation are overlayed onto an optical image of the two central members of the IC4329 galaxy group. The image shows that IC4329A (left), a spiral galaxy with an active nucleus seen edge-on, is especially bright in X-rays in comparison to the huge elliptical galaxy IC4329 (right). Hot diffuse gas is distributed over the whole group. In the central part of the group X-ray emission is observed even between both galaxies pointing to gas heated by shock waves from the IC4329A / IC4329 interaction.
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