1159 + 123 - A bright high-redshift QSO selected from a UK Schmidt IIIaF plate

Details 1159 + 123 - A bright high-redshift QSO selected from a UK Schmidt IIIaF plate 1159 + 123 - A bright high-redshift QSO selected from a UK Schmidt IIIaF plate

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.211p..45h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 211, Nov. 15, 1984, p. 45P-50P.

Astronomy and Astrophysics

Astronomy

8

Line Spectra, Lyman Spectra, Quasars, Red Shift, Telescopes

Scientific paper

Using IIIaF, IIaD and IIIaJ objective prism plates from the UK Schmidt telescope the authors have discovered a strong emission-line QSO having zem ≅ 3.5. The only known QSOs with higher redshifts were discovered by radio or colour selection techniques. The discovery indicates that, up to redshifts of 3.5, QSOs are not conspicuously less frequent than in the range 3.0 < zem < 3.3. Spectroscopic studies at Steward Observatory show a strong absorption system displaced to the red of the emission lines, indicating an inflow velocity of 500 km s-1 with respect to the emission lines.

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