NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-21 T18:50:43 PDT
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For refcode 2001ApJ...559..173H:
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Copyright by American Astronomical Society. Reproduced by permission
2001ApJ...559..173H Evidence for an Accelerating Wind as the Broad-Line Region in NGC 3516 J. B. Hutchings, G. A. Kriss, R. F. Green, M. Brotherton, M. E. Kaiser, A. P. Koratkar, and W. Zheng Received 2001 February 12; accepted 2001 May 22 ABSTRACT Spectroscopic data in wavelengths 900-3000 A have been obtained in a low flux state of the nucleus of the Seyfert 1 galaxy NGC 3516. The line profiles show P Cygni characteristics, particularly in O VI {lambda}1032, and are compared with data from an earlier and higher state. The profiles are suggestive of and consistent with an accelerating wind driven by a disk continuum source in which the ionization radii have changed. This scenario may apply to the formation of other broad emission lines in active galactic nuclei. Subject headings: galaxies: active - galaxies: individual (NGC 3516) - galaxies: nuclei - galaxies: Seyfert - ultraviolet: galaxies
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