The Gas-phase Metallicity Profiles of Star-forming Galaxies in the Modified Accretion Disk Framework
Enci Wang,
Simon J. Lilly
Abstract:Simulations indicate that the inflow of gas of star-forming galaxies is almost co-planar and corotating with the gas disk, and that the outflow of gas driven by stellar winds and/or supernova explosions is preferentially perpendicular to the disk. This indicates that the galactic gas disk can be treated as a modified accretion disk. In this work, we focus on the metal enhancement in galactic disks in this scenario of gas accretion. Assuming that the star formation rate surface density (Σ SFR ) is of exponentia… Show more
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