{
  "id": "2109.03239",
  "version": "v1",
  "published": "2021-09-07T18:00:00.000Z",
  "updated": "2021-09-07T18:00:00.000Z",
  "title": "The impact of realistic red supergiant mass-loss on stellar evolution",
  "authors": [
    "Emma R. Beasor",
    "Ben Davies",
    "Nathan Smith"
  ],
  "comment": "7 pages, 3 figures, accepted for publication in ApJ",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Accurate mass-loss rates are essential for meaningful stellar evolutionary models. For massive single stars with initial masses between 8 - 30\\msun the implementation of cool supergiant mass loss in stellar models strongly affects the resulting evolution, and the most commonly used prescription for these cool-star phases is that of de Jager. Recently, we published a new \\mdot\\ prescription calibrated to RSGs with initial masses between 10 - 25\\msun, which unlike previous prescriptions does not over estimate \\mdot\\ for the most massive stars. Here, we carry out a comparative study to the MESA-MIST models, in which we test the effect of altering mass-loss by recomputing the evolution of stars with masses 12-27\\msun\\ with the new \\mdot-prescription implemented. We show that while the evolutionary tracks in the HR diagram of the stars do not change appreciably, the mass of the H-rich envelope at core-collapse is drastically increased compared to models using the de Jager prescription. This increased envelope mass would have a strong impact on the Type II-P SN lightcurve, and would not allow stars under 30\\msun\\ to evolve back to the blue and explode as H-poor SN. We also predict that the amount of H-envelope around single stars at explosion should be correlated with initial mass, and we discuss the prospects of using this as a method of determining progenitor masses from supernova light curves.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-09-07T18:00:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "realistic red supergiant mass-loss",
      "initial mass",
      "single stars",
      "cool supergiant mass loss",
      "prescription"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}