The missing UV absorption lines of NGC 4151Near simultaneous high dispersion long and short wavelength International Ultraviolet Explorer (IUE) observations of the Seyfert galaxy NGC 4151 are discussed. Previous observations revealed a narrow absorption system in Mg II not present in Ly alpha or C IV. The new observations confirm the presence of this system in Mg II and its absence in the other lines. Possible reasons for this are discussed. Future Hubble Space Telescope studies of NGC 4151 are discussed.
Document ID
19910008649
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Leech, K. J. (London Univ. (England). Cambridge (England)., United States)
Penston, M. V. (Royal Greenwich Observatory F.R.)., United States)
Snijders, M. A. J. (Tuebingen Univ. (Germany Cambridge, United Kingdom)
Ward, M. J. (Royal Greenwich Observatory Greenbelt, MD, United States)
Gull, T. R. (NASA Goddard Space Flight Center)
Date Acquired
September 6, 2013
Publication Date
August 1, 1990
Publication Information
Publication: ESA, Evolution in Astrophysics: IUE Astronomy in the Era of New Space Missions