What is the difference between radio-loud and radio-quiet quasi-stellar objects

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167626· OSTI ID:5509900

Hutchings, J B; Janson, T; Neff, S G ^[1]

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1. Dominion Astrophysical Observatory, Victoria (Canada)

Measures of the nuclear and host galaxy luminosities and colors and a morphological discussion of the host galaxies are presented for a sample of low-redshift, high-luminosity, radio-quiet QSOs whose redshift and luminosity distribution matches that of a radio-loud sample previously discussed. Radio-quiet QSOs are found to reside in galaxies which are smaller, fainter, and redder than the host galaxies of radio-loud QSOs. These properties are generally consistent with the suggestion that radio-quiet QSOs are located in spiral-type galaxies and radio-loud QSOs are located in more elliptical-type galaxies. Significantly less evidence is found for tidal interactions among the radio-quiet objects, although they appear to reside in somewhat richer environments in terms of nearby companions. 10 refs.

• OSTI ID: 5509900
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 342; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
BASIC INTERACTIONS
CLASSIFICATION
CONFIGURATION
COORDINATES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELLIPTICAL CONFIGURATION
GALAXIES
GALAXY NUCLEI
GRAVITATIONAL INTERACTIONS
INTERACTIONS
LUMINOSITY
MORPHOLOGY
OPTICAL PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
QUASARS
RADIATIONS
RADIO GALAXIES
RADIOASTRONOMY
RADIOWAVE RADIATION
RED SHIFT
SPIRAL CONFIGURATION