On the correlation between the absolute magnitudes of quasistellar objects and the velocities of ejected gas.
Abstract
Summary. For all QSOs which show absorptionline systems, /3 = [(1 + Ze)2  (1 + Za)2]/[(l + Ze)2 + (1 + z0)2] is plotted against the absolute visual magnitude (evaluated under the assumption that the emissionline red shifts are of cosmological origin, and for q0 = 0 and 1). The results are shown in Figures la and ib. Regression analysis summarized in Table 2 shows a statistically significant correlation ( 4 a level). The form of the correlation is approximately /3 L112, where L is the cosmological luminosity. The present data are in homogeneous and there are several selection effects which cannot be compensated for in a simple way; consequently, any conclusions must be regarded as tentative. Nevertheless, the current trend of the data lends support to the hypothesis that the QSOs are at their redshift distances, and that many of the absorption systems arise in gas which is intrinsic to the QSOs and which is ejected from the central objects at velocities c/3, correlated with the luminosity. The form of this correlation is consistent with radiationdriven gas. Key words: quasars  absorptionline systems  luminosity velocity correlation
 Publication:

Astronomy and Astrophysics
 Pub Date:
 January 1978
 Bibcode:
 1978A&A....62..229P
 Keywords:

 Absorption Spectra;
 Gas Flow;
 Line Spectra;
 Magnitude;
 Quasars;
 Statistical Correlation;
 Flow Velocity;
 Least Squares Method;
 Luminosity;
 Red Shift;
 Selection;
 Astrophysics;
 Absolute Magnitudes:Quasars;
 Distances:Quasars;
 Quasars:Redshifts