IUE observations of extragalactic objects

@article{Boksenberg1978IUEOO,
  title={IUE observations of extragalactic objects},
  author={Alec Boksenberg and M. A. J. Snijders and R. J. Wilson and Piero Benvenuti and Jordi Clavell and Ferdinando Duccio Macchetto and Michael V. Penston and Albert Boggess and Theodore R. Gull and Prabhakar Gondhalekar and Arthur Lonne Lane and Barry E. Turnrose and C. C. Wu and W. M. Burton and A M S Smith and Francesco Bertola and Massimo Capaccioli and Aina Elvius and Robert A. E. Fosbury and Massimo Tarenghi and M. H. Ulrich and R. L. Hackney and Carole Jordan and C. G. Perola and Robert Charles Roeder and M. R. Schmidt},
  journal={Nature},
  year={1978},
  volume={275},
  pages={404-414}
}
During the commissioning phase of IUE several extragalactic objects were observed spectrally at low dispersion in the UV range λλ1150–3200: the Seyfert galaxies NGC4151 and NGC1068, the QSO 3C273, the BL Lacertae object B2 1101 +38, the giant elliptical galaxy M87 and the spiral galaxy M81. The results obtained are presented and a preliminary analysis given for all six objects, discussing the continuous spectrum, extinction, emission line spectrum and absorption line spectrum, where possible… 

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NGC1068 is one of the brightest galaxies included by Seyfert1 in his list of extragalactic objects having compact, luminous nuclei within which broad, high-excitation emission lines occur. It has

The γ-ray emission from the Seyfert galaxy NGC 4151

  • L. Bassani
  • Physics
    Astrophysics and Space Science
  • 1981
Light curves at X-ray, ultraviolet, optical and infrared wavelengths of NGC 4151 over the period 1977–1980 are presented together with a summary of the large amount of observational data relating to

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We present echelle observations of the intrinsic UV absorption lines in the Seyfert galaxy NGC 4151; these observations were obtained with the Space Telescope Imaging Spectrograph aboard the Hubble

Simultaneous Ultraviolet and X-Ray Observations of the Seyfert Galaxy NGC 4151. II. Physical Conditions in the UV Absorbers

We present a detailed analysis, including photoionization modeling, of the intrinsic absorption in the Seyfert 1 galaxy NGC 4151 using ultraviolet (UV) spectra from the Hubble Space Telescope Space

Infrared Spectroscopy of NGC 4151: Probing the Obscured Ionizing Active Galactic Nucleus Continuum

The Infrared Space Observatory (ISO) Short-Wavelength Spectrometer (SWS) infrared spectroscopic observations of the nucleus of Seyfert galaxy NGC 4151, which are described in a companion paper, are

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