229 datasets found

Keywords: seyfert galaxies

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  • Broad- and narrow-line Seyfert 1 galaxies

    We report here our comparative analysis of the active galactic nucleus (AGN) and star formation (SF) characteristics of a sample of narrow-line Seyfert 1 (NLS1) and broad-line...
  • HST COS spectrum of I Zwicky 1

    We present an analysis of the Hubble Space Telescope Cosmic Origins Spectrograph spectrum of IZw1 aiming to probe the absorbing medium associated with the active galactic...
  • NIR lines for AGN up to z~3

    Optical rest-frame spectroscopic diagnostics are usually employed to distinguish between star formation and active galactic nucleus (AGN) powered emission. However, this method...
  • MCG 08-11-011 narrowband light curves

    We report the results from a photometric reverberation mapping campaign carried out with the C18 telescope at the Wise Observatory from 2019 to 2020, targeting the active...
  • Circinus galaxy N-band VLTI/MATISSE images

    Active galactic nuclei play a key role in the evolution of galaxies, but their inner workings and physical connection to the host are poorly understood due to a lack of angular...
  • Molecular gas prop. in local Seyfert 2 gal.

    We present a multiwavelength study of the molecular gas properties of a sample of local Seyfert 2 galaxies to assess if, and to what extent, the presence of an active galactic...
  • NGC1068 I-HCN(1-0) and I-HCO+(1-0) maps

    The current understanding of star formation (SF) contemplates that the regulation of this phenomenon in galaxy disks reflects a complex balance between processes that operate in...
  • Turin-SyCAT, Seyferts multifrequency catalog

    We present the first release of Turin-SyCAT, a multifrequency catalog of Seyfert galaxies. We selected Seyfert galaxies considering criteria based on radio, infrared, and...
  • Origins of radio emission in NLS1s

    Narrow-line Seyfert 1 galaxies (NLS1s) are believed to be active galactic nuclei (AGN) in the early stages of their evolution. Several dozen of them have been found to host...
  • NGC1808 ALMA datacubes

    We report on Atacama Large Millimeter Array (ALMA) observations of CO(3-2) emission in the Seyfert2/starburst galaxy NGC 1808, at a spatial resolution of 4pc. Our aim is to...
  • 5 Seyferts reduced CO(2-1) cubes

    Active galactic nucleus (AGN) driven outflows are believed to play an important role in regulating the growth of galaxies, mostly via negative feedback. However, their effects...
  • X-ray absorption in INTEGRAL AGN

    In this work the INTEGRAL hard X-ray selected sample of AGN has been used to investigate the possible contribution of absorbing material distributed within the host galaxies to...
  • NGC 3516 optical flare

    We present observations from the short-term intensive optical campaign (from September 2019 to January 2020) of the changing-look Seyfert NGC 3516. This active galactic nucleus...
  • NGC 1068 GRAVITY reconstructed image

    We present near-infrared interferometric data on the Seyfert 2 galaxy NGC 1068, obtained with the GRAVITY instrument on the European Southern Observatory Very Large Telescope...
  • Mrk 231 CO(1-0) and CN(1-0) line observations

    We present interferometric observations of the CN(1-0) line emission in Mrk 231 and combine them with previous observations of CO and other H_2_ gas tracers to study the...
  • NGC1068 CO and HCO images

    We investigate the fueling and the feedback of nuclear activity in the Seyfert 2 galaxy NGC1068, by studying the distribution and kinematics of molecular gas in the torus and...
  • NGC4388 and NGC2110 spectral files

    We aim to measure the physical properties of the hot X-ray corona of two active galactic nuclei, NGC 4388 and NGC 2110. We analysed the hard X-ray (20-300keV) INTEGRAL spectrum...
  • LOFAR 143MHz images of 3C 236

    We have examined the giant radio galaxy 3C 236 using LOFAR at 143MHz down to an angular resolution of 7 arcseconds, in combination with observations at higher frequencies. We...
  • H2O megamaser galaxies radio continuum 5GHz data

    An essential part of the paradigm describing active galactic nuclei is the alignment between the radio jet and the associated rotation axis of the sub-pc accretion disks....
  • HST/COS and FUSE UV spectra of Mrk 509

    To elucidate the location, physical conditions, mass outflow rate, and kinetic luminosity of the outflow from the active nucleus of the Seyfert 1 galaxy Mrk 509 we used...
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