An infrared study of starbursts in the interacting galaxy pair Arp 299 (NGC 3690+IC 694)

Journal Article · Mon May 01 00:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167433· OSTI ID:5582135

Nakagawa, Takao; Nagata, Tetsuya; Geballe, T R; Okuda, Haruyuki; Shibai, Hiroshi ^[1]

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1. NASA, Infrared Telescope Facility, Mauna Kea, HI (USA)

Extensive infrared observations have been obtained of the three active regions in Arp 299. Multiaperture JHK photometry reveals that the colors of the three regions are totally different from each other, and that there are very red nuclei smaller than 4 arcsec in two of them. Multiaperture spectroscopy of the Br-gamma and the shock-excited H2 lines shows that both the atomic and molecular lines are spatially extended, indicating that Arp 299 is undergoing an active episode of star formation not only in its nuclei but also well outside of them. Although there is some evidence that suggests the presence of a compact, active galactic nucleus, a simple starburst model can explain the bolometric luminosities, production rates of ionizing photons, and H24 line luminosities of each active region in Arp 299. However, each starburst cannot last longer than 10 to the 8th yr. 56 refs.

• OSTI ID: 5582135
• Journal Information: Astrophysical Journal; (USA), Vol. 340; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
GRAVITATIONAL INTERACTIONS
COSMIC RADIO SOURCES
EMISSION SPECTRA
GALACTIC EVOLUTION
GALAXY NUCLEI
INFRARED RADIATION
LUMINOSITY
PHOTOMETRY
SPECTROSCOPY
STAR EVOLUTION
BASIC INTERACTIONS
ELECTROMAGNETIC RADIATION
INTERACTIONS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SPECTRA
640105* - Astrophysics & Cosmology- Galaxies