The merging/AGN connection II. Ionization of the circumnuclear regions

Abstract

We report the first results of a study of a sample of 20 galaxy mergers/interacting systems, using the VIMOS and PMAS integral field spectrographs. For each object, we extracted the integrated spectrum of the central regions and analyzed the ionization state using classical diagnostic diagrams (Veilleux & Osterbrock 1987). There is evidence of AGN ionization in 4 of the objects, i.e. 20% of the sample, a considerably higher fraction than found in previous studies ~4%

arXiv comment4 pages, 2 figures, accepted for publishing in A&A Letters

References in corpus (10)

• The Demography of Massive Dark Objects in Galaxy Centres
• Gasdynamics and Starbursts in Major Mergers
• Hubble Space Telescope Images of a Sample of Twenty Nearby Luminous Quasars
• Quasars, their host galaxies, and their central black holes
• Quasi-Stellar Objects, Ultraluminous IR Galaxies, and Mergers
• Colors of AGN host galaxies at 0.5<z<1.1 from GEMS
• Supermassive Black Holes in Nuclei of Galaxies
• Quasar host galaxy star formation activity from multicolour data
• Ultraluminous Infrared Galaxies: Atlas of Near-Infrared Images
• The Near-Infrared properties of the host galaxies of radio quasars

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• The Evolution and Environments of X-ray Emitting Active Galactic Nuclei in High-Redshift Large-Scale Structures
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• AKARI Near-Infrared Spectroscopy of SDSS-Selected Blue Early-Type Galaxies
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