Infrared and radio emission from S0 galaxies

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114957· OSTI ID:6286789

Bally, J; Thronson, Jr, H A

Far-IR data are presented on 74 early-type S0 galaxies that were selected on the basis of the availability of radio-continuum measurements. Most of the galaxies are detected at IR wavelengths with IRAS, indicating the presence of a cold interstellar medium (ISM) in these galaxies. The mass of gas in these systems is estimated to lie in the range of 10 to the 7th to 10 to the 10th solar. The most massive ISM in some S0s approaches that found in some spirals. The brighter IR-emitting galaxies all lie close to a relationship established for gas-rich spiral galaxies. None of these galaxies have large ratio fluxes, suggesting that strong nuclear radio sources or extended radio lobes and jets are absent or suppressed. Strong radio emission is found among those galaxies that are either faint or not detected at IR wavelengths. The absence of an ISM suggests that these galaxies are of an earlier type that those that have large IR fluxes. 38 references.

• Research Organization: ATandT Bell Laboratories, Crawford Hill, NJ (USA); Wyoming Infrared Observatory, Laramie (USA)
• OSTI ID: 6286789
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 97; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC GASES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
FLUIDS
GALACTIC EVOLUTION
GALAXIES
GASES
INFRARED RADIATION
INTERSTELLAR SPACE
MASS
RADIATIONS
RADIOWAVE RADIATION
SPACE