{
  "id": "1011.4593",
  "version": "v1",
  "published": "2010-11-20T18:09:46.000Z",
  "updated": "2010-11-20T18:09:46.000Z",
  "title": "Low Luminosity AGN candidates in SDSS",
  "authors": [
    "J. P. Torres-Papaqui",
    "R. Coziol",
    "J. M. Islas-Islas",
    "R. A. Ortega-Minakata",
    "D. M. Neri-Larios"
  ],
  "comment": "8 pages, 2 figures, to appear in XIII Latin American Regional IAU Meeting",
  "categories": [
    "astro-ph.GA",
    "astro-ph.CO"
  ],
  "abstract": "In a sample of 476931 NELGs obtained from the SDSS DR5 data we find that in 22% of the galaxies the emission line [OIII]$\\lambda$5007, H$\\beta$, or both, are missing. The nature of the activity in these galaxies was determined using a diagnostic diagram comparing the equivalent width of [NII]$\\lambda$6584 with the ratio [NII]$\\lambda$6584/H$\\alpha$. The majority of these galaxies are AGN. The H$\\alpha$ emission lines have a mean FWHM of 400 km s$^{-1}$ and mean luminosity of 5.6$\\times$10$^{39}$ erg s$^{-1}$, which justify their classification as LLAGN. A study of their star formation histories using STARLIGHT reveals no trace of star formation over the last Gyr period. The hosts of the LLAGNs are early-type, T$\\le 2$, with bulges more massive than those of the luminous AGNs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-11-20T18:09:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "low luminosity agn candidates",
      "emission line",
      "sdss dr5 data",
      "star formation histories",
      "diagnostic diagram"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 878387,
      "adsabs": "2011RMxAC..40..100T"
    }
  }
}