The Gigantic Barred Galaxy NGC 6872

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

The luminous barred galaxy NGC 6872 is one of the largest spiral galaxies known. Star formation is traced all along the arms, which extend over more than 100 kpc. This is a challenge for models of interacting galaxies that predict an infall of gas and a burst of star formation in the center. We present new observations of the large-scale distribution and kinematics of the atomic gas obtained with the Australia Telescope Compact Array and VLT observations of the stellar populations, together with a comparison with numerical simulations of the evolution of gas and stars in this interacting system.

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