{
  "id": "1507.05967",
  "version": "v1",
  "published": "2015-07-21T20:01:43.000Z",
  "updated": "2015-07-21T20:01:43.000Z",
  "title": "A spectroscopic survey of Herbig Ae/Be stars with X-Shooter I: Stellar parameters and accretion rates",
  "authors": [
    "J. R. Fairlamb",
    "R. D. Oudmaijer",
    "I. Mendigutía",
    "J. D. Ilee",
    "M. E. van den Ancker"
  ],
  "comment": "29 pages, 19 figures, Accepted for publication in MNRAS",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Herbig Ae/Be stars span a key mass range that links low and high mass stars, and thus provide an ideal window from which to explore their formation. This paper presents VLT/X-Shooter spectra of 91 Herbig Ae/Be stars, HAeBes; the largest spectroscopic study of HAeBe accretion to date. A homogeneous approach to determining stellar parameters is undertaken for the majority of the sample. Measurements of the ultra-violet (UV) are modelled within the context of magnetospheric accretion, allowing a direct determination of mass accretion rates. Multiple correlations are observed across the sample between accretion and stellar properties: the youngest and often most massive stars are the strongest accretors, and there is an almost 1:1 relationship between the accretion luminosity and stellar luminosity. Despite these overall trends of increased accretion rates in HAeBes when compared to classical T Tauri stars, we also find noticeable differences in correlations when considering the Herbig Ae and Herbig Be subsets. This, combined with the difficulty in applying a magnetospheric accretion model to some of the Herbig Be stars, could suggest that another form of accretion may be occurring within the Herbig Be mass range.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-07-21T20:01:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "stellar parameters",
      "spectroscopic survey",
      "herbig ae/be stars span",
      "mass range",
      "high mass stars"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 29,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}