{
  "id": "1603.06951",
  "version": "v1",
  "published": "2016-03-22T20:00:09.000Z",
  "updated": "2016-03-22T20:00:09.000Z",
  "title": "The Interstellar Extinction Toward the Milky Way Bulge with Planetary Nebulae, Red Clump, and RR Lyrae stars",
  "authors": [
    "David M. Nataf"
  ],
  "comment": "12 pages, 6 figures, 2 Tables, invited article to PASA special review issue on the Galactic Bulge, edited by Beatriz Barbuy. This version includes minor modifications requested by referee prior to being accepted for publication",
  "categories": [
    "astro-ph.SR",
    "astro-ph.GA"
  ],
  "abstract": "I review the literature covering the issue of interstellar extinction toward the Milky Way bulge, with emphasis placed on findings from planetary nebulae, RR Lyrae, and red clump stars. I also report on observations from HI gas and globular clusters. I show that there has been substantial progress in this field in recent decades, most particularly from red clump stars. The spatial coverage of extinction maps has increased by a factor $\\sim 100 \\times$ in the past twenty years, and the total-to-selective extinction ratios reported have shifted by $\\sim$20-25\\%, indicative of the improved accuracy and separately, of a steeper-than-standard extinction curve. Problems remain in modelling differential extinction, explaining anomalies involving the planetary nebulae, and understanding the difference between bulge extinction coefficients and \"standard\" literature values.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-03-22T20:00:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "milky way bulge",
      "planetary nebulae",
      "rr lyrae stars",
      "interstellar extinction",
      "red clump stars"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160306951N"
    }
  }
}