Detection of the O i 11287 Angstrom Line in the Seyfert 1 Galaxy I ZW 1
Abstract
In this paper we report a detection of the infrared 11287 A transition of neutral oxygen in the Seyfert 1 galaxy I Zw 1. The observed strength of the feature is 6.5 x 10^-14^ ergs cm^-2^ s^-1^. When this value is compared to the flux of O I λ8446 measured by Persson and McGregor, the ratio of the photon fluxes is unity, to within the measurement uncertainties. This is a direct confirmation that the broad permitted O I lines observed in Seyfert 1 galaxies and quasars arise through fluorescent excitation by Lyman β.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1989
- DOI:
- 10.1086/167587
- Bibcode:
- 1989ApJ...342..235R
- Keywords:
-
- Emission Spectra;
- Seyfert Galaxies;
- Electron Transitions;
- Lyman Beta Radiation;
- Oxygen;
- Quasars;
- Resonance Fluorescence;
- Astrophysics;
- GALAXIES: INDIVIDUAL ALPHANUMERIC: I ZW 1;
- GALAXIES: SEYFERT;
- RADIATION MECHANISMS