Compact molecular gas structure in the interacting galaxy pair Arp 299 (IC 694-NGC 3690)

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/184815· OSTI ID:6398563

Sargent, A I; Sanders, D B; Scoville, N Z; Soifer, B T

High-resolution (about 5-arcsec) CO observations of the interacting galaxy pair Arp 299 (IC 694-NGC 3690) show that about 40 percent of the total molecular gas content is concentrated in two compact regions each of mass 1.4 x 10 to the 9th solar mass. One component lies at the nucleus of IC 694, while the other spans the region of overlap between the two galaxies. The properties of the latter component are consistent with its being a region of greatly enhanced star formation. However, the unusually high L(FIR)/M(H2) ration for IC 694, together with the presence of a flat-spectrum radio source, suggest that its remarkable luminosity may be largely produced by nonthermal processes. 22 references.

• Research Organization: California Institute of Technology, Pasadena
• OSTI ID: 6398563
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 312; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BASIC INTERACTIONS
COSMIC GASES
COSMIC RADIO SOURCES
FLUIDS
GALACTIC EVOLUTION
GALAXIES
GALAXY NUCLEI
GASES
GRAVITATIONAL INTERACTIONS
INTERACTIONS
INTERGALACTIC SPACE
LUMINOSITY
MOLECULES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPACE
STAR EVOLUTION