On the Baldwin effect in optically-selected quasars

Details On the Baldwin effect in optically-selected quasars On the Baldwin effect in optically-selected quasars

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203p..25k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 203, May 1983, p. 25P-29P.

Astronomy and Astrophysics

Astronomy

10

Continuous Spectra, Emission Spectra, Line Spectra, Luminosity, Quasars, Spectral Line Width, Correlation Coefficients, Correlation Detection

Scientific paper

Osmer has asserted that the apparent correlation between emission-line width and continuum luminosity (the Baldwin effect) in an optically-selected set of quasars could be due to observational selection effects. The authors have divided the data into groups according to spectral index α and find that for the groups 0.0 < α < 0.3 and 0.8 < α < 2.4, the correlation is tight (dispersion ≡0.7 mag) and the points lie clear of the calculated cut-off. These 73 quasars define a mean relation Mcont = 18.28 + 3.77(log Wem-1.50), which differs little from the mean relation found in a radio-selected sample.

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