{
  "id": "1502.06307",
  "version": "v1",
  "published": "2015-02-23T03:06:25.000Z",
  "updated": "2015-02-23T03:06:25.000Z",
  "title": "A super-Eddington wind scenario for the progenitors of type Ia supernovae: binary population synthesis calculations",
  "authors": [
    "Bo Wang",
    "Xin Ma",
    "Dongdong Liu",
    "Zhengwei Liu",
    "Chengyuan Wu",
    "Jujia Zhang",
    "Zhanwen Han"
  ],
  "comment": "14 pages, 9 figures, 1 table, accepted for publication in Astronomy and Astrophysics",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "The super-Eddington wind scenario has been proposed as an alternative way for producing type Ia supernovae (SNe Ia). The super-Eddington wind can naturally prevent the carbon--oxygen white dwarfs (CO WDs) with high mass-accretion rates from becoming red-giant-like stars. Furthermore, it works in low-metallicity environments, which may explain SNe Ia observed at high redshifts. In this article, we systematically investigated the most prominent single-degenerate WD+MS channel based on the super-Eddington wind scenario. We combined the Eggleton stellar evolution code with a rapid binary population synthesis (BPS) approach to predict SN Ia birthrates for the WD+MS channel by adopting the super-Eddington wind scenario and detailed mass-accumulation efficiencies of H-shell flashes on the WDs. Our BPS calculations found that the estimated SN Ia birthrates for the WD+MS channel are ~0.009-0.315*10^{-3}{yr}^{-1} if we adopt the Eddington accretion rate as the critical accretion rate, which are much lower than that of the observations (<10% of the observed SN Ia birthrates). This indicates that the WD+MS channel only contributes a small proportion of all SNe Ia. The birthrates in this simulation are lower than previous studies, the main reason of which is that new mass-accumulation efficiencies of H-shell flashes are adopted. We also found that the critical mass-accretion rate has a significant influence on the birthrates of SNe Ia. Meanwhile, the results of our BPS calculations are sensitive to the values of the common-envelope ejection efficiency.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-02-23T03:06:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "super-eddington wind scenario",
      "binary population synthesis calculations",
      "type ia supernovae",
      "sn ia birthrates",
      "sne ia"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}