Spectroscopy of PKS 1157+014 - A QSO with no Lyman alpha emission

Details Spectroscopy of PKS 1157+014 - A QSO with no Lyman alpha emission Spectroscopy of PKS 1157+014 - A QSO with no Lyman alpha emission

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..611w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Dec. 1979, p. 611-620.

Astronomy and Astrophysics

Astronomy

30

Absorption Spectra, Astronomical Spectroscopy, Forbidden Transitions, Lyman Alpha Radiation, Quasars, Red Shift, Spectral Line Width, Ultraviolet Spectra, Wave Dispersion

Scientific paper

Spectra of the QSO PKS 1157+014 with low and intermediate dispersion obtained with the 3.9 Anglo-Australian Telescope are presented. The QSO has C IV 1549 and C III 1909 forbidden emission lines at ze=1.978 plus or minus 0.008, but L(alpha) in emission is absent or extremely weak. There are four, and possibly seven, absorption systems with a variety of ionization states, with L(alpha) apparently present in all systems. Several systems have C IV lines that are stronger relative to L(alpha) than is usual for gas and many absorption systems have velocities approximately equal to or greater than 10000 km/s relative to the emission lines, suggesting an origin in a QSO wind.

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