Infrared photometry and polarimetry of NGC 1068.
Abstract
Narrow-band 20 micron data show the presence in NGC 1068 of a silicate emission feature peaked at 19 microns. This feature as well as the 5-34 micron spectrum are in accord with the Jones et al (1977) model assuming emission by heated dust. The nucleus of NGC 1068 is strongly polarized in the near-infrared, and the polarization and a position angle rotation decrease as the wavelength increases. It is suggested that the near-infrared spectrum and polarization arise from a heavily obscured polarized power-law source, and that this source is so heavily obscured that it is probably not observable at wavelengths shorter than one micron.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- May 1978
- DOI:
- 10.1086/156124
- Bibcode:
- 1978ApJ...222...95L
- Keywords:
-
- Astronomical Photometry;
- Galactic Nuclei;
- Infrared Astronomy;
- Infrared Photometry;
- Polarimetry;
- Seyfert Galaxies;
- Emission Spectra;
- Near Infrared Radiation;
- Optical Thickness;
- Silicates;
- Astrophysics;
- Galactic Nuclei:Infrared Sources;
- Infrared Photometry:Seyfert Galaxies;
- Polarimetry:Seyfert Galaxies