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arXiv · 1110.3613

Fountain-driven gas accretion by the Milky Way

F. Marinacci·F. Fraternali·J. Binney·C. Nipoti·L. Ciotti·P. Londrillo
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Abstract

Accretion of fresh gas at a rate of ~ 1 M_{sun} yr^{-1} is necessary in star-forming disc galaxies, such as the Milky Way, in order to sustain their star-formation rates. In this work we present the results of a new hydrodynamic simulation supporting the scenario in which the gas required for star formation is drawn from the hot corona that surrounds the star-forming disc. In particular, the cooling of this hot gas and its accretion on to the disc are caused by the passage of cold galactic fountain clouds through the corona.

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F. Marinacci, F. Fraternali, J. Binney, C. Nipoti, L. Ciotti, P. Londrillo. 2011-10-17. Fountain-driven gas accretion by the Milky Way. https://doi.org/10.1051/epjconf%2F20121908008

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