Spectrum of a QSO with redshift 3.8

Details Spectrum of a QSO with redshift 3.8 Spectrum of a QSO with redshift 3.8

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.322...40s&link_type=abstract

Nature (ISSN 0028-0836), vol. 322, July 3, 1986, p. 40-42. Research supported by the Miller Institute for Basic Research in Scie

Physics

15

Quasars, Red Shift, Visible Spectrum, Spectral Line Width, Spectral Resolution

Scientific paper

Hazard et al. (1986) have provided a description of the circumstances leading to the identification of a quasi-stellar object (1208 + 1011) with z = 3.82 + or - 0.04. The present paper is concerned with a moderate-resolution optical spectrum of this object. It is pointed out that its precise redshift, z = 3.803 + or - 0.005, is the highest ever recorded. The considered data were obtained on 13 January 1986 UT with the double spectrograph at the Cassegrain focus of the 5.08-m Hale telescope at Palomar Observatory. The observed emission lines are listed in a table together with the line strengths, equivalent widths, wavelengths, and redshifts. A graph with the spectrum of 1208 + 1011 is also presented.

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