{
  "id": "astro-ph/0311531",
  "version": "v1",
  "published": "2003-11-24T13:47:54.000Z",
  "updated": "2003-11-24T13:47:54.000Z",
  "title": "Modelling of the continuum emission from Class 0 sources",
  "authors": [
    "M. Rengel",
    "D. Froebrich",
    "S. Wolf",
    "J. Eisloeffel"
  ],
  "comment": "5 pages, 2 figures, Latex, macro included, oral contribution in JENAM 2003, \"The early phases of star formation\", in press",
  "categories": [
    "astro-ph"
  ],
  "abstract": "Class 0 sources are objects representing the earliest phase of the protostellar evolution. Since they are highly obscured by an extended dusty envelope, these objects emit mainly in the far-infrared to millimetre wavelength range. The analysis of their spectral energy distributions with wide wavelength coverage allows to determine the bolometric temperature and luminosity. However, a more detailed physical interpretation of the internal physical structure of these objects requires radiative transfer modelling. We present modelling results of spectral energy distributions of a sample of nine Class 0 sources in the Perseus and Orion molecular clouds. The SEDs have been simulated using a radiative transfer code based on the Monte Carlo method. We find that a spherically symmetric model for the youngest Class 0 sources allows to reproduce the observed SEDs reasonably well. From our modelling we derive physical parameters of our sources, such as their mass, density distribution, size, etc. We find a density structure of $\\rho \\sim r^{-2}$ for the collapsing cores at young ages, evolving to $\\rho \\sim r^{-3/2}$ at later times.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2003-11-24T13:47:54.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "continuum emission",
      "spectral energy distributions",
      "millimetre wavelength range",
      "wide wavelength coverage",
      "orion molecular clouds"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 633856
    }
  }
}