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Journal Articles The Astrophysical Journal Letters Year : 2015

Playing with Positive Feedback: External Pressure-triggering of a Star-forming Disk Galaxy

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Abstract

In massive galaxies, the currently favored method for quenching star formation is via active galactic nuclei (AGN) feedback, which ejects gas from the galaxy using a central supermassive black hole. At high redshifts however, explanation of the huge rates of star formation often found in galaxies containing AGNs may require a more vigorous mode of star formation than is attainable by simply enriching the gas content of galaxies in the usual gravitationally driven mode that is associated with the nearby universe. Using idealized hydrodynamical simulations, we show that AGN-pressure-driven star formation potentially provides the positive feedback that may be required to generate the accelerated star formation rates observed in the distant universe.

Dates and versions

insu-03644720 , version 1 (19-04-2022)

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Rebekka Bieri, Yohan Dubois, Joseph Silk, Gary A. Mamon. Playing with Positive Feedback: External Pressure-triggering of a Star-forming Disk Galaxy. The Astrophysical Journal Letters, 2015, 812, ⟨10.1088/2041-8205/812/2/L36⟩. ⟨insu-03644720⟩
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