{
  "id": "0909.2635",
  "version": "v1",
  "published": "2009-09-14T19:57:32.000Z",
  "updated": "2009-09-14T19:57:32.000Z",
  "title": "A view of the Galactic halo using beryllium as a time scale",
  "authors": [
    "Rodolfo Smiljanic",
    "L. Pasquini",
    "P. Bonifacio",
    "D. Galli",
    "B. Barbuy",
    "R. Gratton",
    "S. Randich"
  ],
  "comment": "To appear in Proceedings of the International Astronomical Union, IAU Symposium, Volume 265, Chemical abundances in the Universe: connecting first stars to planets, K. Cunha, M. Spite and B. Barbuy, eds. 2 Pages, 2 figures",
  "categories": [
    "astro-ph.GA",
    "astro-ph.SR"
  ],
  "abstract": "Beryllium stellar abundances were suggested to be a good tracer of time in the early Galaxy. In an investigation of its use as a cosmochronometer, using a large sample of local halo and thick-disk dwarfs, evidence was found that in a log(Be/H) vs. [alpha/Fe] diagram the halo stars separate into two components. One is consistent with predictions of evolutionary models while the other is chemically indistinguishable from the thick-disk stars. This is interpreted as a difference in the star formation history of the two components and suggests that the local halo is not a single uniform population where a clear age-metallicity relation can be defined.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-09-14T19:57:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "time scale",
      "galactic halo",
      "local halo",
      "beryllium stellar abundances",
      "halo stars separate"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1017/S1743921310000414"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 831170,
      "adsabs": "2010IAUS..265..134S"
    }
  }
}