{
  "id": "0912.4209",
  "version": "v2",
  "published": "2009-12-21T16:52:34.000Z",
  "updated": "2010-01-27T11:20:36.000Z",
  "title": "Mass fluxes for hot stars",
  "authors": [
    "L. B. Lucy"
  ],
  "comment": "Accepted by A&A; 6 pages, 5 figures; minor changes from v1",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "In an attempt to understand the extraordinarily small mass-loss rates of late-type O dwarfs, mass fluxes in the relevant part of (T_{eff}, g)-space are derived from first principles using a previously-described code for constructing moving reversing layers. From these mass fluxes, a weak-wind domain is identified within which a star's rate of mass loss by a radiatively-driven wind is less than that due to nuclear burning. The five weak-wind stars recently analysed by Marcolino et al. (2009) fall within or at the edge of this domain. But although the theoretical mass fluxes for these stars are ~ 1.4 dex lower than those derived with the formula of Vink et al. (2000), the observed rates are still not matched, a failure that may reflect our poor understanding of low-density supersonic outflows. Mass fluxes are also computed for two strong-wind O4 stars analysed by Bouret et al. (2005). The predictions agree with the sharply reduced mass loss rates found when Bouret et al. take wind clumping into account.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-01-27T11:20:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "hot stars",
      "low-density supersonic outflows",
      "strong-wind o4 stars",
      "sharply reduced mass loss rates",
      "extraordinarily small mass-loss rates"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1051/0004-6361/200913400",
      "journal": "Astronomy and Astrophysics",
      "year": 2010,
      "month": "Mar",
      "volume": 512
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 840899,
      "adsabs": "2010A&A...512A..33L"
    }
  }
}