{
  "id": "1403.2533",
  "version": "v1",
  "published": "2014-03-11T10:52:55.000Z",
  "updated": "2014-03-11T10:52:55.000Z",
  "title": "Proper motions for HST observations in three off-axis bulge fields",
  "authors": [
    "Mario Soto",
    "Hugo Zeballos",
    "Konrad Kuijken",
    "R. Michael Rich",
    "Andrea Kunder",
    "Tri Astraatmadja"
  ],
  "comment": "14 pages, 14 figures, published in Astronomy & Astrophysics",
  "journal": "A&A 562, A41 (2014)",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "Aims. This is the second in a series of papers that attempt to unveil the kinematic structure of the Galactic bulge through studying radial velocities and proper motions. We report here ~15000 new proper motions for three low foreground-extinction off-axis fields of the Galactic bulge. Methods. Proper motions were derived from a combination of Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys (ACS) images taken 8 and 9 years apart, and ACS observations taken 9 and 10 years apart, and they reach accuracies better than 0.9 mas/yr for more than ~10000 objects with magnitudes F814W < 24. Results. The proper motion distributions in these fields are similar to those of Galactic minor axis bulge fields. We observe the rotation of main sequence stars below the turn-off within the Galactic bulge, as in the minor axis fields. Conclusions. Our stellar proper motions measurements show a significant bulge rotation for fields as far from the galactic plane as b=-8.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-03-11T10:52:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "proper motion",
      "off-axis bulge fields",
      "wide field planetary camera",
      "hst observations",
      "minor axis bulge fields"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1051/0004-6361/201117339",
      "journal": "Astronomy and Astrophysics",
      "year": 2014,
      "month": "Feb",
      "volume": 562
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014A&A...562A..41S"
    }
  }
}