{
  "id": "2201.01078",
  "version": "v1",
  "published": "2022-01-04T10:49:27.000Z",
  "updated": "2022-01-04T10:49:27.000Z",
  "title": "Optical spectroscopic observations of intermediate-mass black holes and their host galaxies: the $M_{BH}-σ_*$ relation",
  "authors": [
    "Vladimir Goradzhanov",
    "Igor Chilingaryan",
    "Ivan Katkov",
    "Kirill Grishin",
    "Victoria Toptun",
    "Ivan Kuzmin",
    "Mariia Demianenko"
  ],
  "comment": "5 pages, 7 figures. Astronomy at the epoch of multimessenger studies. Proceedings of the VAK-2021 conference, Aug 23-28, 2021 - Moscow, 2021",
  "categories": [
    "astro-ph.GA",
    "astro-ph.HE"
  ],
  "abstract": "Intermediate-mass black holes (IMBHs; $M_{BH} <2*10^{5} M_{\\odot}$) in galaxy centers are cruciel for painting a coherent picture of the formation and growth of supermassive black holes (SMBHs). Using Big Data analysis, we identified 305 IMBH candidates for IMBH and 1623 candidates of `light-weight' SMBHs ($2 * 10^{5} M_{odot} < M_{BH} <10^{6} M_{\\odot}$). For 35 host galaxies from this combined sample with the X-ray-confirmed active galactic nuclei (AGN) we collected and analyzed optical spectroscopic observations. These data show that bulge stellar velocity dispersions ($\\sigma_*$) lie in the range of 24$\\dots$118~km/s and do not follow the correlation with $M_{BH}$ established by larger SMBHs indicating that in the $10^{5}-10^{6} M_{\\odot}$ range the accretion is the prevailing BH growth channel.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-01-04T10:49:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "intermediate-mass black holes",
      "optical spectroscopic observations",
      "host galaxies",
      "bulge stellar velocity dispersions",
      "big data analysis"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}