Evidence for an accelerating wind as the broad-line region in NGC 3516

Authors
Hutchings, JB Kriss, GA Green, RF Brotherton, M Kaiser, ME Koratkar, AP Zheng, W
Citation
Jb. Hutchings et al., Evidence for an accelerating wind as the broad-line region in NGC 3516, ASTROPHYS J, 559(1), 2001, pp. 173-180
Citations number
39
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
559
Issue
1
Year of publication
2001
Part
1
Pages
173 - 180
Database
ISI
SICI code
0004-637X(20010920)559:1<173:EFAAWA>2.0.ZU;2-0
Abstract
Spectroscopic data in wavelengths 900-3000 Angstrom have been obtained in a low flux state of the nucleus of the Seyfert 1 galaxy NGC 3516. The line p rofiles 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 con tinuum source in which the ionization radii have changed. This scenario may apply to the formation of other broad emission lines in active galactic nu clei.