{
  "id": "astro-ph/9908059",
  "version": "v1",
  "published": "1999-08-06T10:16:17.000Z",
  "updated": "1999-08-06T10:16:17.000Z",
  "title": "Photometric and Kinematic Studies of Open Star Clusters I: NGC 581 (M 103)",
  "authors": [
    "Joerg Sanner",
    "Michael Geffert",
    "Jens Brunzendorf",
    "Juergen Schmoll"
  ],
  "comment": "9 pages, 11 figures, accepted for publication in Astronomy & Astrophysics, Main Journal",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We present CCD photometry and a proper motion study of the young open star cluster, NGC 581 (M 103). Fitting isochrones to the colour magnitude diagram, we found an age of 16 +/- 4 Myr and a distance of roughly 3 kpc for this cluster. The proper motion study identifies 77 stars of V=14.5 mag or brighter to be cluster members. We combine membership determination by proper motions and statistical field star subtraction to derive the IMF of the cluster and find a quite steep slope of Gamma=-1.80.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-08-06T10:16:17.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "kinematic studies",
      "photometric",
      "proper motion study identifies",
      "young open star cluster",
      "colour magnitude diagram"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 518873
    }
  }
}