NASA NTRS · 19730049123
Redshift of OQ172.
Abstract
Comments on a recently discovered second QSO with a redshift greater than 3. From a study of a composite spectrum of OQ172 formed by adding data from spectra obtained on different nights two strong emission features near 5540 and 7015 A are noted and are identified with Lyman alpha 1216 A and CIV 1549 A. The measured wavelength of the emission peaks corresponds to a redshift of 3.56 for Lyman alpha and 3.53 for CIV. It is concluded that the emission line redshift of OQ172 is near 3.53.
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Wampler, E. J., Robinson, L. B., Baldwin, J. A., Burbidge, E. M.. 1973-06-08. Redshift of OQ172.. https://ntrs.nasa.gov/citations/19730049123
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