A statistical analysis of the emission and absorption lines of quasars

Details A statistical analysis of the emission and absorption lines of quasars A statistical analysis of the emission and absorption lines of quasars

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997acasn..38..215g&link_type=abstract

Acta Astronomica Sinica, vol. 38, p. 215

Astronomy and Astrophysics

Astronomy

Quasars, Emission Spectra, Statistical Analysis, Line Spectra, Red Shift, Astronomical Spectroscopy

Scientific paper

A statistical analysis of 3941 QSOs in three tables given by Hewitt and Burbidge (1987, 1989) has been carried out, finding considerable absorption lines in the z(em) range of 1.4-3.2 and their marked increase in the z(em) interval of 1.8-2.4. Absorption redshifts z(ab) greater than z(em) occur in the z(em) range of 1.4-2.8. This shows that the activities of QSOs are enhanced in the z(em) interval of 1.8-2.2. This seems to reflect the evolution of QSOs with the interaction of their environment.

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