Tidal triggering of starbursts and nuclear activity in galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Active Galactic Nuclei, Black Holes (Astronomy), Star Formation, Starburst Galaxies, Tides, Angular Momentum, Interstellar Gas, Quasars, Star Distribution

Scientific paper

Gas distributed throughout a galaxy responds strongly to the tidal field of a companion during a merger. In some cases dynamical instability will drive a large fraction of the gas into the inner regions of the galaxy. A strong burst of star formation will follow and subsequent evolution may lead to the formation of a black hole. Continued accretion of gas by the black hole may provide sufficient power to explain quasars and nuclear activity in otherwise normal galaxies.

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