The nature of the nebulosity associated with the BL Lacertae object AO 0235+164.
Abstract
We present photographic and spectrophotometric observations of the faint nebulosity associated with the active BL Lacertae object AO 0235+164. The nebula is centrally concentrated and shows relatively strong emission features which we identify with [0 ii], H , and [0 iii] at z = 0.525, coincident with the lower of the two absorption systems in AO 0235+164. The luminosity in the lines is an order of magnitude greater than that expected for even the most luminous intervening late-type galaxy. Although no definite conclusion can be reached, this and other arguments suggest that the absorption and emission may be produced by material which is physically associated with the BL Lacertae object. Subject headings: BL Lacertae objects nebulae: individual
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1977
- DOI:
- 10.1086/155718
- Bibcode:
- 1977ApJ...218..611S
- Keywords:
-
- Astronomical Photometry;
- Nebulae;
- Radio Sources (Astronomy);
- Emission Spectra;
- H Beta Line;
- Oxygen Spectra;
- Spectrophotometry;
- Astrophysics