{
  "id": "astro-ph/0210070",
  "version": "v1",
  "published": "2002-10-02T14:47:50.000Z",
  "updated": "2002-10-02T14:47:50.000Z",
  "title": "Preliminary results from VLT (FORS1) photometry of NGC 6397",
  "authors": [
    "G. Andreuzzi",
    "V. Testa",
    "G. Marconi",
    "G. Alcaino",
    "F. Alvarado",
    "R. Buonanno"
  ],
  "comment": "2 pages, 1 figure, uses newpasp.sty, to be published in ``New Horizons in Globular Cluster Astronomy'', ASP Conference Series, 2002; Eds.: G. Piotto, G. Meylan, G. Djorgowski and M. Riello",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We present VLT (FORS1) photometry of the lower main sequence (MS) of the Galactic Globular Cluster (GGC) NGC 6397, for stars located in 2 fields extending from a region near the cluster center out to ~ 10'. The obtained CMD shows a narrow MS extending down to V ~ 27 (figure c), much deeper than any previous ground based study and comparable with previous HST photometry (Cool et al. 1996). The comparison between observed MS Luminosity Functions (LFs) derived for 2 annuli at different radial distance from the center of the cluster shows a clear-cut correlation between their slope before reaching the turn-over, and the radial position of the observed fields inside the cluster area: the LFs become flatter with decreasing radius, a trend that is consistent with the interpretation of NGC 6397 as a dynamically relaxed system.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-10-02T14:47:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "preliminary results",
      "lower main sequence",
      "ms luminosity functions",
      "galactic globular cluster",
      "narrow ms"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 598574
    }
  }
}