Relative quasar luminosities determined from emission line strengths

Details Relative quasar luminosities determined from emission line strengths Relative quasar luminosities determined from emission line strengths

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.273..431b&link_type=abstract

Nature, vol. 273, June 8, 1978, p. 431-435.

Astronomy and Astrophysics

Astronomy

81

Emission Spectra, Luminous Intensity, Quasars, Spectral Line Width, Ultraviolet Astronomy, Astronomical Models, Cosmology, Hubble Diagram, Radio Spectra, Red Shift

Scientific paper

Observations of flat radio spectrum QSOs selected from complete samples confirm the strong correlation between continuum luminosity and emission line equivalent width. The rms scatter about a mean relationship is about 0.6 mag. The data indicate that the luminosity of QSO emission lines increase as the 1/3 power of the continuum luminosity. Unless the zero point of the relationship between emission line equivalent width and continuum luminosity depends on redshift, both the local hypothesis and zero pressure models of the universe in which qO is near zero are ruled out by the data at the 99% confidence level.

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