Objective prism measurements of quasar redshifts

Details Objective prism measurements of quasar redshifts Objective prism measurements of quasar redshifts

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231..391d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, March 15, 1988, p. 391-396.

Astronomy and Astrophysics

Astronomy

4

Astronomical Photography, Quasars, Red Shift, Data Sampling, Emission Spectra, Histograms, Line Spectra, Photographic Plates

Scientific paper

An automated method of measuring quasar redshifts from objective prism photographic plates is described. Tests of the method using a large sample of quasars show that the emission lines are identified correctly in 90 percent of the objects. The redshifts have an uncertainty of only z = + or - 0.02 at z = 2 for quasars to a limiting magnitude of B(J) = 19.5. This removes some of the constraints which have previously limited the use of objective prism data in three-dimensional quasar clustering studies.

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