Radio observations of IRAS extreme infrared galaxies

Journal Article · Fri Nov 01 04:00:00 EST 1985 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/113922· OSTI ID:5146442

Antonucci, R R.J.; Olszewski, E W

We present 6 cm VLA D-array observations of five IRAS ''blank field'' sources. Unresolved radio sources have been detected coincident with galaxies found in the fields by Aaronson and Olszewski (1984). Of the three candidate galaxy identifications for 0413+122 by Aaronson and Olszewski, only one is a radio source, and we suggest that it is the correct identification for the IRAS source. This disagrees with the optical identification by Houck et al. (1985). Also, based on our radio data and an improved IRAS position, we have determined the true identification of the infrared source 0404+101. (Houck et al. 1985 presented observations of a different identification of 0404+101.) For these galaxies, the corrected ..nu..F/sub ..nu../ (80 ..mu..)/..nu..F/sub ..nu../ (0.45 ..mu..) ratio ranges up to 250 with the far-infrared radiation presumably being thermal emission from dust grains. The primary energy sources could hypothetically be intense starbursts, and Ulvestad (1982) has predicted the level of radio continuum emission from starbursts. Our detections are at levels typically an order of magnitude above the predictions. This suggests that while rapid star formation may be occurring, there is probably also some other source of radio emission. Some famous starburst galaxies also produce radio emission in excess of Ulvestad's predictions; however, some of their radio emission is apparently due to other phenomena.

• Research Organization: National Radio Astronomy Observatory, Edgemont Road, Charlottesville, Virginia 22903
• OSTI ID: 5146442
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 90:11; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC DUST
COSMIC RADIO SOURCES
DUSTS
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
GALAXIES
INFRARED RADIATION
RADIATION SOURCES
RADIATIONS
RADIO GALAXIES
RADIOWAVE RADIATION
STAR EVOLUTION