The refill of superbubble cavities

Abstract

In this paper we study the late evolution of model galaxies after a single episode of star formation of different durations. The aim of the paper is to discover the timescale needed to refill with cold gas the center of the galaxy. This timescale strongly depends on the amount of gas initially present inside the galaxy and ranges between 125 and 600 Myr. A HI hole can therefore survive several hundred Myrs after the last SNII has exploded. If, as a consequence of the refill of the center of the galaxy, a second episode of star formation occurs, it pollutes the surrounding medium in a very short timescale (of the order of 10--15 Myr), at variance with what happens if the center of the galaxy is still occupied by hot and tenuous gas.

4 pages, 2 figures, accepted for publication in A&A Letters

References in corpus (11)

• Stellar evolution with rotation VIII: Models at Z = 10^{-5} and CNO yields for early galactic evolution
• The supernova rate per unit mass
• On the typical timescale for the chemical enrichment from SNeIa in Galaxies
• Dynamical and chemical evolution of gas-rich dwarf galaxies
• The Resolved Stellar Population of the Post-Starburst Galaxy NGC 1569
• Galactic winds and circulation of the ISM in dwarf galaxies
• A Test of the Standard Hypothesis for the Origin of the HI Holes in Holmberg II
• Multiple starbursts in Blue Compact Galaxies
• The Complex Star Formation History of NGC 1569
• Continuous star formation in IZw18
• Dynamical and chemical evolution of NGC1569

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