{
  "id": "astro-ph/0702573",
  "version": "v1",
  "published": "2007-02-21T16:30:23.000Z",
  "updated": "2007-02-21T16:30:23.000Z",
  "title": "Inhomogeneous Galactic halo: a possible explanation for the spread observed in s- and r- process elements",
  "authors": [
    "G. Cescutti"
  ],
  "comment": "2 pages, 2 figures, proceedings of \"From stars to galaxies\", Venice October 2006, to be published in the Astronomical Society of the Pacific Conference Series",
  "categories": [
    "astro-ph"
  ],
  "abstract": "The considerable scatter of the s- and r-process elements observed in low-metallicity stars, compared to the small star to star scatter observed for the alpha elements, is an open question for the chemical evolution studies. We have developed a stochastic chemical evolution model, in which the main assumption is a random formation of new stars, subject to the condition that the cumulative mass distribution follows a given initial mass function. With our model we are able to reproduce the different features of alpha-elements and s-and r-process elements. The reason for this resides in the random birth of stellar masses coupled with the different stellar mass ranges from where alpha-elements and s-and r-process elements originate. In particular, the sites of production of the alpha elements are the whole range of the massive stars, whereas the mass range of production for the s- and r-process elements has an upper limit of 30 solar masses.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-02-21T16:30:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "inhomogeneous galactic halo",
      "explanation",
      "alpha elements",
      "s-and r-process elements originate",
      "stochastic chemical evolution model"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 744971
    }
  }
}