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Structure in the nucleus of NGC 1068 at 10 microns

Authors :
Tresch-Fienberg, R
Fazio, G. G
Gezari, D. Y
Hoffmann, W. F
Lamb, G. M
Shu, P. K
Mccreight, C. R
Source :
NASA, Washington Star Formation in Galaxies.
Publication Year :
1987
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1987.

Abstract

New 8 to 13 micron array camera images of the central kiloparsec of Seyfert 2 galaxy NGC 1068 resolve structure that is similar to that observed at visible and radio wavelengths. The images reveal an infrared source which is extended and asymmetric, with its long axis oriented at P.A. 33 deg. Maps of the spatial distribution of 8 to 13 micron color temperature and warm dust opacity are derived from the multiwavelength infrared images. The results suggest that there exist two pointlike luminosity sources in the central regions of NGC 1068, with the brighter source at the nucleus and the fainter one some 100 pc to the northeast. This geometry strengthens the possibility that the 10 micron emission observed from grains in the nucleus is powered by a nonthermal source. In the context of earlier visible and radio studies, these results considerably strengthen the case for jet induced star formation in NGC 1068.

Subjects

Subjects :
Astrophysics

Details

Language :
English
Database :
NASA Technical Reports
Journal :
NASA, Washington Star Formation in Galaxies
Publication Type :
Report
Accession number :
edsnas.19870014937
Document Type :
Report