Luminosity and mass segregation of galaxies in groups

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Groups of galaxies are analyzed to reveal the segregation of galaxies of various luminosities and masses in their positions relative to the group centers and peculiar velocities within the groups. It is found that the brightest and most massive galaxies are, on average, closer to the group center, while the faintest and least massive galaxies are farther than galaxies with intermediate masses and luminosities. The segregation of galaxies of various luminosities and masses in their mean peculiar radial velocities is less pronounced.

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