Method of identifying absorption systems in quasar spectra. II - Application to OQ 172 and discussion

Details Method of identifying absorption systems in quasar spectra. II - Application to OQ 172 and discussion Method of identifying absorption systems in quasar spectra. II - Application to OQ 172 and discussion

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983acaps...3..189c&link_type=abstract

(Acta Astrophysica Sinica, vol. 3, no. 3, 1983, p. 189-201) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 7, Dec. 19

Astronomy and Astrophysics

Astrophysics

Absorption Spectra, Astronomical Spectroscopy, Quasars, Red Shift, Filters, Line Spectra, Monte Carlo Method, Signal To Noise Ratios, Tables (Data)

Scientific paper

Four absorption systems have been identified in the spectrum of the high-redshift quasar OQ 172. A reliable redshift of 2.07010, a very probable one of 2.56312, and two probable ones of 0.17546 and 0.17910 are determined by astrophysical analysis. A Monte Carlo method is used to confirm the theoretical model for calculating the probability of random identification. Selection effects, the combination of statistical test and SNR filter, and the effects of erroneous and missed identifications are discussed.

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