How to inflate a wind-blown bubble

Understand

Stellar winds are one of several ways that massive stars can affect the star formation process on local and galactic scales.

• In this paper we investigate the numerical resolution needed to inflate an energy-driven stellar wind bubble in an external medium.
• We find that the radius of the wind injection region, $r_{\rm inj}$, must be below a maximum value, $r_{\rm inj,max}$, in order for a bubble to be produced, but must be significantly below this value if the bubble properties are to closely agree with analytical predictions.
• The final bubble momentum is within 25 per cent of the value from a higher resolution reference model if $\chi = r_{\rm inj}/r_{\rm inj,max}$ = 0.1.