{
  "id": "astro-ph/9707229",
  "version": "v1",
  "published": "1997-07-21T08:01:35.000Z",
  "updated": "1997-07-21T08:01:35.000Z",
  "title": "Metallicity Dependence of the Cepheid Calibration",
  "authors": [
    "M. Sekiguchi",
    "M. Fukugita"
  ],
  "comment": "8 pages, TeX, 3 PostScript figures, submitted to THE OBSERVATORY",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We point out that the absolute magnitude of the Galactic Cepheids, which have been used for local calibrations for Cepheid period-luminosity relation, shows an unexpectedly large metal abundance effect. This indicates that either Cepheids period luminosity relation has a large metallicity dependence, much larger than expected in stellar pulsation models, or the unreddened distances to clusters contain a large systematic error arising from the neglect of the metallicity effect. This effect may introduce an uncertainty of --0.4 to +0.1 mag into the distance to the LMC estimated using the Cepheid PL relation.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-07-21T08:01:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cepheid calibration",
      "cepheids period luminosity relation",
      "unexpectedly large metal abundance effect",
      "cepheid pl relation",
      "cepheid period-luminosity relation"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 444242
    }
  }
}