Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-06-29
Astronomy and Astrophysics
Astrophysics
16 pages and 4 diagrams; to appear in the Astrophysical Journal
Scientific paper
10.1086/322329
Spectroscopic data in wavelengths 900--3000A 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 1032A, and are compared with data from an earlier higher state. The profiles are suggestive of, and consistent with, an accelerating wind driven by a disk continuum source, in which the ionisation radii have changed. This scenario may apply to the formation of other broad emission lines in AGN.
Brotherton Michael
Green Richard F.
Hutchings John B.
Kaiser Mary Elizabeth
Koratkar Anuradha P.
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