= Solution
In a compact <starburst galaxy>, <stellar feedback> can approach the <radiation-pressure limit of a dusty starburst>, $\kappa F/c\sim g$, so stronger luminosity drives a <galactic outflow> rather than allowing indefinitely increasing <star formation rate>. https://arxiv.org/abs/astro-ph/0503027[Optically thick starburst-disk calculations] give a characteristic infrared <flux> near $10^{13}L_\odot\,\mathrm{kpc}^{-2}$; with $L_{\rm IR}\sim10^{10}L_\odot[\dot M_*/(M_\odot\,\mathrm{yr}^{-1})]$ and an emitting area of order $1\,\mathrm{kpc}^2$, this corresponds to $\dot M_*\sim10^3M_\odot\,\mathrm{yr}^{-1}$ and would consume $10^{10}M_\odot$ of gas in only $10^7\,\mathrm{yr}$. \b[Feedback and a finite fuel supply produce a characteristic upper scale for compact bursts], rather than a universal ceiling on the total rate independent of star-forming area and gas supply.
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