{
  "id": "1210.3695",
  "version": "v1",
  "published": "2012-10-13T10:53:40.000Z",
  "updated": "2012-10-13T10:53:40.000Z",
  "title": "The Local Group Galaxy NGC 6822 and its Asymptotic Giant Branch Stars",
  "authors": [
    "Patricia A. Whitelock",
    "John W. Menzies",
    "Michael W. Feast",
    "Francois Nsengiyumva",
    "Noriyuki Matsunaga"
  ],
  "comment": "MNRAS in press",
  "categories": [
    "astro-ph.GA",
    "astro-ph.CO"
  ],
  "abstract": "JHKs photometry is presented from a 3.5 year survey of the central regions of the irregular galaxy NGC6822. The morphology of the colour-magnitude and colour-colour diagrams is discussed with particular reference to M, S and C-type AGB stars and to M-supergiants. Mean JHKs magnitudes and periods are given for 11 O-rich and 50 presumed C-rich Miras. Data are also listed for 27 large amplitude AGB stars without periods and for 69 small amplitude AGB variables. The slope of the bolometric period-luminosity relation for the C-rich Miras is in good agreement with that in the LMC. Distance moduli derived from the C- and O-rich Miras are in agreement with other estimates. The period distribution of C-rich Miras in NGC6822 is similar to that in the Magellanic Clouds, but differs from that in the dwarf spheroidals in the Local Group. In the latter there is a significant proportion of large amplitude, short period variables indicating a population producing old carbon-rich AGB stars.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-10-13T10:53:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "asymptotic giant branch stars",
      "local group galaxy ngc",
      "old carbon-rich agb stars",
      "producing old carbon-rich agb",
      "c-rich miras"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/sts188",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2013,
      "month": "Jan",
      "volume": 428,
      "number": 3,
      "pages": 2216
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1190583,
      "adsabs": "2013MNRAS.428.2216W"
    }
  }
}