Far-infrared continuum emission from the nucleus, starburst, and extended spiral arms of NGC 1068
Far-infrared slit scans across NGC 1068 are used to better define the contribution of the active nucleus, starburst disk, and extended spiral arms in the luminous output of this bright Seyfert 2 galaxy. The decomposition of the emission from the bright, inner 3 kpc of this galaxy suggests that at 50 microns, about half the emission is from star formation in a starburst disk and half from the compact, centrally heated circumnuclear cloud. The 100-micron profile of the starburst disk is asymmetric with respect to the nucleus. This appears to be the result of an extraordinary star-forming complex about a kiloparsec away from the center. With the application of maximum entropy deconvolution to the scans, evidence is found for 100-micron emission from the extended spiral arms of the galaxy. The far-infrared emission from the starburst region is distinguished from that of the extended spiral arms. In terms of both total luminosity and surface brightness, the extended spiral arms of NGC 1068 are at the bright end of the range of far-infrared emission from quiescent, noninteracting spirals. 17 references.
- Research Organization:
- McDonald Observatory, Austin, TX
- OSTI ID:
- 5605310
- Journal Information:
- Astrophys. J.; (United States), Vol. 321
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
SEYFERT GALAXIES
FAR INFRARED RADIATION
ENTROPY
GALAXY NUCLEI
INFRARED SPECTRA
LUMINOSITY
NEAR INFRARED RADIATION
SPIRAL CONFIGURATION
STAR EVOLUTION
CONFIGURATION
ELECTROMAGNETIC RADIATION
GALAXIES
INFRARED RADIATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SPECTRA
THERMODYNAMIC PROPERTIES
640105* - Astrophysics & Cosmology- Galaxies