Evidence for an Accelerating Wind as the Broad-Line Region in NGC 3516
Abstract
Spectroscopic data in wavelengths 900-3000 Å 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 λ1032, 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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 2001
- DOI:
- 10.1086/322329
- arXiv:
- arXiv:astro-ph/0107002
- Bibcode:
- 2001ApJ...559..173H
- Keywords:
-
- Galaxies: Active;
- galaxies: individual (NGC 3516);
- Galaxies: Nuclei;
- Galaxies: Seyfert;
- Ultraviolet: Galaxies;
- Astrophysics
- E-Print:
- 16 pages and 4 diagrams