Mathematics – Logic
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983liaco..24..489g&link_type=abstract
IN: Quasars and gravitational lenses; Proceedings of the Twenty-fourth Liege International Astrophysical Colloquium, Cointe-Ougr
Mathematics
Logic
Galactic Structure, Quasars, Astronomical Photometry, Galactic Clusters
Scientific paper
By analogy with other active extragalactic phenomena, a quasar is defined to consist of at least two components: a central point source and an extended underlying nebulosity, referred to as the host galaxy of a quasar. Here, some integrated properties of the host galaxies are derived from CCD surface photometry obtained for 17 low-redshift quasars at the Cassegrain focus of a 2.2-m telescope. The luminosities, diameters, and intensity profiles derived from the CCD observations are consistent with the assumption that radio quasars reside in host galaxies at cosmological distances comparable with first-ranked elliptical cluster galaxies. A less luminous type of galaxy may be associated with radio-quiet quasars.
Fried Jack
Gehren Thomas
Wehinger Peter A.
Wyckoff Susan
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