Radio spectra and red shifts of 179 QSOs

Details Radio spectra and red shifts of 179 QSOs Radio spectra and red shifts of 179 QSOs

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aj.....80....1k&link_type=abstract

Astronomical Journal, vol. 80, Jan. 1975, p. 1-8.

Astronomy and Astrophysics

Astronomy

21

Microwave Emission, Quasars, Radio Spectra, Red Shift, Astronomical Catalogs, Depolarization, Polarization Characteristics, Radio Astronomy, Tables (Data)

Scientific paper

A comparison is made between radio spectral type and red shift for all known QSOs having adequate radio and optical data. A ratio of CE (centimeter excess) to N (normal) spectrum sources is defined and its variation with red shift is given. A radio color-color versus red shift diagram for the 179 QSOs is also presented. The CE/N excess is found to increase rapidly for z greater than 2, and the significance of this trend is discussed.

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