scholarly journals Statistical Properties of QSOs

1972 ◽  
Vol 44 ◽  
pp. 453-457
Author(s):  
A. Braccesi
Keyword(s):  
Optical Properties ◽  
Radio Emission ◽  
Statistical Properties ◽  
Optical Variability ◽  
Stellar Objects ◽  
Luminosity Functions ◽  
Quasi Stellar Objects

Counts of quasi-stellar objects selected by their optical properties imply evolutionary properties similar to those found by examining the radio-selected objects. The optical luminosity functions of the 3CR and optically-selected quasi-stellar objects are compared. Data on the radio emission and optical variability of the optically-selected sample are presented.

Nature of strong radio emission from quasi-stellar objects

1964 ◽  
Vol 9 (2) ◽  
pp. 138-139 ◽  
Author(s):  
L. Gold ◽  
J.W. Moffat
Keyword(s):  
Radio Emission ◽  
Stellar Objects ◽  
Quasi Stellar Objects

scholarly journals Optical Variability of Twenty-Two Quasi-Stellar Objects

1972 ◽  
Vol 44 ◽  
pp. 171-178 ◽  
Author(s):  
R. J. Angione ◽  
H. J. Smith
Keyword(s):  
Large Amplitude ◽  
Small Amplitude ◽  
Secular Trends ◽  
Apparent Magnitude ◽  
Optical Variability ◽  
Stellar Objects ◽  
Light Fluctuations ◽  
Quasi Stellar Objects ◽  
One Year

Light fluctuations have been found in all 22 QSOs studied by measurement of plates from the Harvard collection, which cover the last eighty years. The conclusions of this study are: (i) There appear to be at least three general classes of variation: (a) erratic, small-amplitude variations, (b) erratic, large-amplitude variations, and (c) slow quasi-periodic variations, e.g. as in 3C 273; (ii) No significant differences were detected between the rates of rise and decline of luminosity; (iii) Definite secular trends over at least 50 years were found in 5 QSOs; (iv) No simple clearcut periods greater than one year have been found; (v) There may be a trend of decreasing amplitude of fluctuations in apparent magnitude with increasing luminosity.

scholarly journals ACTIVE GALACTIC NUCLEUS AND STARBURST RADIO EMISSION FROM OPTICALLY SELECTED QUASI-STELLAR OBJECTS

2013 ◽  
Vol 768 (1) ◽  
pp. 37 ◽  
Author(s):  
J. J. Condon ◽  
K. I. Kellermann ◽  
Amy E. Kimball ◽  
Željko Ivezić ◽  
R. A. Perley
Keyword(s):  
Radio Emission ◽  
Active Galactic Nucleus ◽  
Stellar Objects ◽  
Quasi Stellar Objects

Radio Emission of Quasi-Stellar Objects

1969 ◽  
Vol 158 ◽  
pp. L11 ◽  
Author(s):  
Kenneth R. Lang ◽  
Yervant Terzian
Keyword(s):  
Radio Emission ◽  
Stellar Objects ◽  
Quasi Stellar Objects

scholarly journals The Asiago Catalogue of Quasi Stellar Objects

1983 ◽  
Vol 104 ◽  
pp. 33-33
Author(s):  
S. di Serego Alighieri
Keyword(s):  
Radio Emission ◽  
Absorption Line ◽  
Internal Consistency ◽  
Spectral Range ◽  
Magnetic Tape ◽  
Stellar Objects ◽  
X Ray ◽  
Range Resolution ◽  
Quasi Stellar Objects ◽  
Cross Reference

A catalogue containing the QSOs known with reasonable reliability from literature published before the end of 1981 has been compiled at the Asiago Observatory by C. Barbieri, M. Capaccioli, S. Cristiani, G. Nardon and A. Omizzolo, and will be published before the end of 1982 by the Memorie della Societá Astronomica Italiana.The present release is an enlarged and updated version of that published by Barbieri et al. (1975). It provides basic data (names, equatorial and galactic coordinates at 1950.0, photometry, redshifts and information on radio emission, variability, morphology, presence of absorption lines, X-ray emission and finding charts) for 2004 QSOs, together with references, individual notes and cross reference tables. Two separate lists contain X-ray data for 271 QSOs (X-ray luminosity, optical-X and optical-radio spectral indexes) and absorption line data for 243 QSOs (absorption systems with their redshift, identified ions and wavelengths, spectral range, resolution and dispertion of the spectra).The catalogue has been carefully checked for internal consistency and several discrepancies with the lists by Hewitt and Burbidge (1980) and by Véron and Véron (1975) have been resolved. The authors intend to provide a magnetic tape version of the catalogue to the Centre de Données Stellaires of the Strasbourg Observatory for distribution to the interested community.

Radio Emission from Quasi-Stellar Objects

1971 ◽  
Vol 164 ◽  
pp. L119 ◽  
Author(s):  
J. F. C. Wardle ◽  
G. K. Miley
Keyword(s):  
Radio Emission ◽  
Stellar Objects ◽  
Quasi Stellar Objects
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