Wave-driven mass loss of stripped envelope massive stars: progenitor-dependence, mass ejection, and supernovae

Understand

The discovery of rapidly rising and fading supernovae powered by circumstellar interaction has suggested the pre-supernova mass eruption phase as a critical phenomenon in massive star evolution.

• It is important to understand the mass and radial extent of the circumstellar medium (CSM) from theoretically predicted mass ejection mechanisms.
• In this work, we study the wave heating process in massive hydrogen-poor stars, running a suite of stellar models in order to predict the wave energy and pre-explosion time scale of surface energy deposition.
• We survey stellar models with main sequence progenitor masses from 20--70 $M_{\odot}$ and metallicity from 0.002 to 0.02.