Infrared structure and the origin of the starburst disk in NGC 1068

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166861· OSTI ID:6438559

Telesco, C M; Decher, R

A detailed map of the extranuclear IR emission in the central 4 kpc of the luminous Seyfert galaxy NGC 1068 is presented. The relationship of the IR emission with low-excitation, visible H II regions implies that the IR luminosity is powered by recent star formation. The observations show that the star formation is distributed across the central 3.5 kpc primarily in two very extended complexes, one located to the north of the nucleus and the other to the southwest. These two complexes coincide with the two dominant CO features. It is shown that there are two inner Lindblad resonances which occur near the ends of the bar which approximately bound the IR-luminous star-forming regions, the CO complexes, and the visually bright spiral arms. It is proposed that the starburst results from a bar-driven density wave which also includes the effects of shock focusing. 52 references.

• Research Organization: NASA, Marshall Space Flight Center, Huntsville, AL (USA)
• OSTI ID: 6438559
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 334; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY SPECTRA
FLUID MECHANICS
GALAXIES
GALAXY NUCLEI
H2 REGIONS
INFRARED RADIATION
MECHANICS
ORIGIN
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SEYFERT GALAXIES
SHOCK WAVES
SPECTRA
STAR EVOLUTION