0254-334/2 - A high redshift QSO without Lyman alpha emission or absorption

Details 0254-334/2 - A high redshift QSO without Lyman alpha emission or absorption 0254-334/2 - A high redshift QSO without Lyman alpha emission or absorption

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.188..711w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 188, Sept. 1979, p. 711-718.

Astronomy and Astrophysics

Astronomy

12

Absorption Spectra, Lyman Alpha Radiation, Quasars, Radio Spectra, Red Shift, Doppler Effect, Emission Spectra, Radio Sources (Astronomy)

Scientific paper

Results are reported for low-dispersion spectroscopic observations of the approximately 16th magnitude QSO 0254-334/2 over the wavelength range from about 3200 to 7000 A with a resolution of approximately 7 A. Previous spectroscopic observations of this source and the nearby radio source PKS 0254-334/R are discussed, along with a subsequent high-resolution spectrum of 0254-334/2. It is found that 0254-334/2 has an emission redshift of 1.857, strong P Cygni-type absorption lines, and apparently no appreciable L-alpha in either emission or absorption. Possible explanations for the lack of L-alpha in emission and in absorption are briefly considered.

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