IDS spectrometry of seven optically-selected high-redshift QSOs

Astronomy and Astrophysics – Astronomy

Scientific paper

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Absorption Spectra, Emission Spectra, Image Dissector Tubes, Line Spectra, Quasars, Red Shift, Spectrometers, Abundance, Astronomical Catalogs, Carbon, High Resolution, Lyman Alpha Radiation, Signal To Noise Ratios, Silicon, X Ray Spectra

Scientific paper

A description is given of the emission and absorption-line spectra of seven bright high-redshift (z greater than 2.5) QSOs from the Tololo Curtis Schmidt survey; the spectra were obtained at a resolution of about 5 A, generally in wavelength regions covering the Ly-alpha and C IV emission lines. Attention is drawn to two apparently broad-lined, high-ionization absorption systems in one object, Q0324-407, at redshifts significantly different from that of the QSO itself; several sharp-lined absorption systems are also detected in this object. No new cases of C IV absorption occurring in Si IV emission are found.

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