{
  "id": "1802.06777",
  "version": "v1",
  "published": "2018-02-19T07:02:07.000Z",
  "updated": "2018-02-19T07:02:07.000Z",
  "title": "The selection function of the LAMOST Spectroscopic Survey of the Galactic Anticentre",
  "authors": [
    "B. -Q. Chen",
    "X. -W. Liu",
    "H. -B. Yuan",
    "M. -S. Xiang",
    "Y. Huang",
    "C. Wang",
    "H. -W. Zhang",
    "Z. -J. Tian"
  ],
  "comment": "13 pages, 12 figures, accepted for publication in MNRAS",
  "categories": [
    "astro-ph.GA",
    "astro-ph.SR"
  ],
  "abstract": "We present a detailed analysis of the selection function of the LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC). LSS-GAC was designed to obtain low resolution optical spectra for a sample of more than 3 million stars in the Galactic anti-centre. The second release of value-added catalogues of the LSS-GAC (LSS-GAC DR2) contains stellar parameters, including radial velocity, atmospheric parameters, elemental abundances and absolute magnitudes deduced from 1.8 million spectra of 1.4 million unique stars targeted by the LSS-GAC between 2011 and 2014. For many studies using this database, such as those investigating the chemodynamical structure of the Milky Way, a detailed understanding of the selection function of the survey is indispensable. In this paper, we describe how the selection function of the LSS-GAC can be evaluated to sufficient detail and provide selection function corrections for all spectroscopic measurements with reliable parameters released in LSS-GAC DR2. The results, to be released as new entries in the LSS-GAC value-added catalogues, can be used to correct the selection effects of the catalogue for scientific studies of various purposes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-02-19T07:02:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "lamost spectroscopic survey",
      "galactic anticentre",
      "galactic anti-centre",
      "lss-gac dr2",
      "selection function corrections"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}