{
  "id": "1107.4175",
  "version": "v1",
  "published": "2011-07-21T06:13:31.000Z",
  "updated": "2011-07-21T06:13:31.000Z",
  "title": "The Orbital Period and Variability of the Dwarf Nova ES Draconis",
  "authors": [
    "F. A. Ringwald",
    "Kenia Velasco"
  ],
  "comment": "16 pages, 6 figures, accepted for publication in New Astronomy",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "A radial velocity study of the cataclysmic variable ES Dra (PG 1524+622) is presented. ES Dra is found to have an orbital period of 0.17660 \\pm 0.00006 d (4.2384 \\pm 0.0014 h). The mass-losing secondary star of ES Dra is detectable in the spectrum, and it has a spectral type of M2 \\pm 1. From this, we estimate the absolute magnitude of ES Dra during our spectroscopic observations to have been MR = 6.5 \\pm 0.5, and its distance to be 720 \\pm 150 pc. The long-term light curve of ES Dra compiled by the American Association of Variable Star Observers (AAVSO) shows that ES Dra is a Z Cam star, which between 1995 and 2009 spent most of its time in standstill.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-07-21T06:13:31.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "orbital period",
      "dwarf nova",
      "variability",
      "long-term light curve",
      "radial velocity study"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1016/j.newast.2011.07.007",
      "journal": "New Astronomy",
      "year": 2012,
      "month": "Feb",
      "volume": 17,
      "number": 2,
      "pages": 108
    },
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 919459,
      "adsabs": "2012NewA...17..108R"
    }
  }
}