The Parkes quarter-Jansky flat-spectrum sample. 2. New optical spectra and redshift measurements
We present optical spectra and redshift measurements for 178 flat-spectrum objects from the Parkes quarter-Jansky flat-spectrum sample. These spectra were obtained in order to compile a complete sample of quasars for use in a study of quasar evolution. We present a composite optical spectrum made from the subset of 109 quasars that have flux densities in the range 0.25 Jy < S2.7 GHz < 0.5 Jy, and make a comparison with a composite for radio-quiet QSOs from the Large Bright Quasar Survey. Our...[Show more]
|Collections||ANU Research Publications|
|Source:||Astronomy and Astrophysics|
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