OH megamasers in high-luminosity IRAS galaxies

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

DOI:https://doi.org/10.1086/165764· OSTI ID:5403969

Mirabel, I F; Sanders, D B

OH megamaser emission and H I and CO profiles from the distant infrared galaxies IRAS 10173 + 0828, III Zw 035, and Zw 475.056 are reported. The OH isotropic luminosities at 1667 MHz are 463, 534, and 6.6 solar luminosities, respectively. Far-infrared pumping efficiencies of the OH greater than 1 percent are found in IRAS 10173 + 0828 and III Zw 035. These two galaxies show anomalously large 1667/1665 MHz emission line ratios. OH megamasers reside in the nuclei of superluminous far-infrared galaxies that have a high content of molecular gas, high efficiency of star formation, and in some instances, a striking deficiency of atomic hydrogen. 15 references.

• Research Organization: CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina; Universidad de Puerto Rico, San Juan; California Institute of Technology, Pasadena
• OSTI ID: 5403969
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 322; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
AMPLIFIERS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC GASES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FAR INFRARED RADIATION
FLUIDS
GALAXIES
GALAXY NUCLEI
GASES
HYDROGEN
INFRARED RADIATION
LUMINOSITY
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
NONMETALS
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIAL VELOCITY
RADIATIONS
STAR EVOLUTION
VELOCITY