Astrophysical: Active galactic nuclei

  • Publication
    Serendipitous EXOSAT sources in the region of the Coma cluster - Active galactic nuclei with steep X-ray spectra
    A ≡7-hr observation of the central part of the Coma cluster of galaxies has been performed with the EXOSAT LE telescopes and CMA detectors. Five serendipitous...
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    Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-Delay Maps for Broad Emission Lines in NGC 5548
    In this contribution, we achieve the primary goal of the active galactic nucleus (AGN) STORM campaign by recovering velocity-delay maps for the prominent broad...
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    Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548
    We present geometric and dynamical modeling of the broad line region (BLR) for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014...
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    Spectrophotometric monitoring of high luminosity active galactic nuceli. I - The methods and data
    The 2.5-m Isaac Newton telescope has been used in a spectrophotometric monitoring program of high-luminosity AGN. The data acquisition and analysis techniques...
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    Spectroscopic monitoring of active galactic nuclei. 3: Size of the broad line region in NGC 3227
    We present in this work the results of a five-month monitoring campaign of the active galactic nucleus in NGC 3227. Both the Balmer H-beta and H-alpha emission...
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    Spectroscopic monitoring of active galactic nuclei. II - The Seyfert-1 galaxy NGC 3516
    We present results of a five month spectroscopic monitoring campaign of the Seyfert-1 galaxy NGC 3516. Using a new calibration method and applying a correction...
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    Star formation and AGN
    We analyze the data from narrow band H-alpha and forbidden O III CCD imaging of a sample of nearby spiral galaxies with active nuclei. The results show that the...
  • Publication
    Star formation in stellar systems
    The present volume on stellar formation discusses basic physical principles relevant to such processes, regions of recent star formation, galaxy formation and...
  • Publication
    Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. 5: Variability of the ultraviolet continuum and emission lines of NGC 3783
    We report on the results of intensive ultraviolet spectral monitoring of the Seyfert 1 galaxy NGC 3783. The nucleus of NGC 3783 was observed with the...