Statistical analysis of emission and absorption lines of quasars. II. An analysis of 6761 quasars

Details Statistical analysis of emission and absorption lines of quasars. II. An analysis of 6761 quasars Statistical analysis of emission and absorption lines of quasars. II. An analysis of 6761 quasars

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cha%26a..23...17g&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 23, Issue 1, p. 17-21.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We made a further analysis of 6761 quasars in the Hewitt-Burbidge 1993 catalogue. The emission redshift range is between 0.0 and 4.9. The results show that, on average, association between absorbing matter and quasar is found in 43% of the cases, but the percentage varies wildly in different emission redshift intervals, from 100% in the intervals 0.2-0.3 and 3.6-3.7 to 0% in the interval 0.7-0.8. The interval at zem = 2.0 is outstanding: it is where the numbers of quasars with emission redshifts, with absorption redshifts, with 3 or more absorption lines, with 6 or more absorption lines, all peak.

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