{
  "id": "1311.7465",
  "version": "v1",
  "published": "2013-11-29T03:45:38.000Z",
  "updated": "2013-11-29T03:45:38.000Z",
  "title": "Properties of semi-convection and convective overshooting for massive stars",
  "authors": [
    "Cai Yun Ding",
    "Yan Li"
  ],
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Properties of semi-convection and core convective overshooting of stars with 15 $M_{\\odot}$ and 30 $M_{\\odot}$ are calculated in the present paper. New methods are used to deal with semi-convection. Different entropy gradient is used when adopting the Schwarzschild method and the Ledoux method which are used to confine the convective boundary and to calculate the turbulent quantities: $\\frac{\\partial \\overline{s}}{\\partial r}=-\\frac{c_{p}}{H_P}(\\nabla-\\nabla_{\\rm ad})$ when the Schwarzschild method is adopted and $\\frac{\\partial \\overline{s}}{\\partial r}=-\\frac{c_{p}}{H_P}(\\nabla-\\nabla_{\\rm ad}-\\nabla_{\\mu})$ when the Ledoux method is adopted. Core convective overshooting and semi-convection are treated as a whole part and the development of them are found to present nearly opposite tendency, more intensive core convective overshooting lead to weaker semi-convection. The influences of different parameters and the convection processing methods on the turbulent quantities are analyzed in this paper. Increasing the mixing-length parameter $\\alpha$ leads to more turbulent dynamic energy in the convective core and prolonging the overshooting distance but depressing the development of semi-convection. The Ledoux method adopted leads to overshooting extending further and semi-convection developing suppressed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-11-29T03:45:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "semi-convection",
      "massive stars",
      "core convective overshooting",
      "ledoux method",
      "properties"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/stt2262",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2014,
      "month": "Feb",
      "volume": 438,
      "number": 2,
      "pages": 1137
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014MNRAS.438.1137D"
    }
  }
}