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Quasar Galaxies: Two-Dimensional Image Deconvolutions

Published online by Cambridge University Press:  04 August 2017

P. A. Wehinger ,
S. Wyckoff ,
T. Gehren  and
H. Spinrad
P. A. Wehinger
Affiliation:
Physics Department, Arizona State University
S. Wyckoff
Affiliation:
Physics Department, Arizona State University
T. Gehren
Affiliation:
Max Planck Institut für Astronomie, Heidelberg
H. Spinrad
Affiliation:
Astronomy Department, University of California, Berkeley

Extract

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Studies of quasar images which have adequate spatial resolution and reach sufficiently faint surface brightness levels indicate that virtually all low redshift (z ≲ 0.6) quasars are surrounded by faint nebulosities extending ∼ 3–20 arcsec from the quasar nucleus (at 26 R mag arcsec−2) (Wyckoff et al. 1980, 1981, Hutchings et al. 1981, Wehinger et al. 1983). Furthermore, the average integrated absolute magnitude and average metric diameter of the quasar nebulosities (quasar nucleus removed) are roughly those expected for galaxies at the corresponding (cosmological) quasar distances. Moreover, statistical support for the cosmological interpretation of the redshifts as well as the galaxy interpretation of the fuzz was found in correlations between the angular isophotal diameters of the quasar nebulosities and the redshifts, and between the integrated apparent magnitudes and the angular isophotal diameters (Wyckoff et al. 1981). Spectroscopic observations of quasar fuzz now convincingly support the galaxy interpretation for the quasar nebulosities (Boroson and Oke 1982, Oke et al. 1983).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 104: Early Evolution of the Universe and Its Present Structure , 1983 , pp. 49 - 50
Copyright
Copyright © Reidel 1983 

References

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