A study of ten quasars with redshifts greater than four

• 1 November 1989
• journal article
• Published by American Astronomical Society in The Astronomical Journal
• Vol. 98, 1507-1522
• https://doi.org/10.1086/115234

Abstract

Keywords

• CHARGE COUPLED DEVICES
• H ALPHA LINE
• QUASARS
• RED SHIFT
• ASTRONOMICAL PHOTOMETRY
• SIGNAL TO NOISE RATIOS
• SKY SURVEYS (ASTRONOMY)
• STELLAR SPECTRA