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Title:
PC 0910 + 5625 - an optically selected quasar with a redshift of 4.04
Authors:
Schmidt, Maarten; Schneider, Donald P.; Gunn, James E.
Affiliation:
AA(Palomar Observatory, Pasadena, CA), AB(Institute for Advanced Study, Princeton, NJ), AC(Princeton University, NJ)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 321, Oct. 1, 1987, p. L7-L10. Research supported by the John D. and Catherine T. MacArthur Foundation. (ApJL Homepage)
Publication Date:
10/1987
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Emission Spectra, Quasars, Red Shift, Spectrum Analysis, Astronomical Photometry, Lyman Alpha Radiation, Spectral Resolution
DOI:
10.1086/184996
Bibliographic Code:
1987ApJ...321L...7S

Abstract

The authors report the discovery of the second quasar with a redshift greater than 4. This object, which has an r magnitude of 21.0, was detected on a CCD grism survey. The spectrum of the quasar has strong, relatively narrow (but resolved) emission lines; there is a deep absorption trough ≡100 Å wide on the blue wing of the Lyman-alpha line; and the continuum at wavelengths shorter than the absorption feature is far weaker that the level present redward of Lyman-alpha.

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