{
  "id": "1404.1687",
  "version": "v1",
  "published": "2014-04-07T08:20:49.000Z",
  "updated": "2014-04-07T08:20:49.000Z",
  "title": "The lithium abundances for a large sample of red giants",
  "authors": [
    "Y. J. Liu",
    "K. F. Tan",
    "L. Wang",
    "G. Zhao",
    "Bun'ei Sato",
    "Y. Takeda",
    "H. N. Li"
  ],
  "journal": "2014, APJ, 785, 94",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "The lithium abundances for 378 G/K giants are derived with non-LTE correction considered. Among these, there are 23 stars that host planetary systems. The lithium abundance is investigated, as a function of metallicity, effective temperature, and rotational velocity, as well as the impact of a giant planet on G/K giants. The results show that the lithium abundance is a function of metallicity and effective temperature. The lithium abundance has no correlation with rotational velocity at vsini $<$ 10 km s$^{-1}$. Giants with planets present lower lithium abundance and slow rotational velocity (vsini $<$ 4 km s$^{-1}$). Our sample includes three Li-rich G/K giants, 36 Li-normal stars and 339 Li-depleted stars. The fraction of Li-rich stars in this sample agrees with the general rate of less than 1$\\%$ in literature, and the stars that show normal amounts of Li are supposed to possess the same abundance at the current interstellar medium. For the Li-depleted giants, Li deficiency may have already taken place at the main sequence stage for many intermediate-mass (1.5-5 M$_{\\odot}$) G/K giants. Finally, we present the lithium abundance and kinematic parameters for an enlarged sample of 565 giants using a compilation of literature, and confirm that the lithium abundance is a function of metallicity and effective temperature. With the enlarged sample, we investigate the differences between the lithium abundance in thin-/thick-disk giants, which indicate that the lithium abundance in thick-disk giants is more depleted than that in thin-disk giants.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-04-07T08:20:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "large sample",
      "red giants",
      "effective temperature",
      "enlarged sample",
      "main sequence stage"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-637X/785/2/94",
      "journal": "The Astrophysical Journal",
      "year": 2014,
      "month": "Apr",
      "volume": 785,
      "number": 2,
      "pages": 94
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014ApJ...785...94L"
    }
  }
}