PC 1247 + 3406 - an optically selected quasar with a redshift of 4.897

Details PC 1247 + 3406 - an optically selected quasar with a redshift of 4.897 PC 1247 + 3406 - an optically selected quasar with a redshift of 4.897

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..837s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, Sept. 1991, p. 837-840.

Other

143

Lyman Alpha Radiation, Quasars, Red Shift, Charge Coupled Devices, Emission Spectra, Line Spectra

Scientific paper

Observations of PC 1247 + 3406, a quasar with a redshift of 4.897 + or - 0.011, is described on the basis of a four-filter CCD survey designed to detect quasars with redshifts between 4.0 and 5.5. The quasar was found to be about the same brightness as PC 1158 + 4635, a quasar with a 20th-magnitude redshift of 4.733 discovered in 1989. The properties of PC 1247 + 3406 are similar to other quasars with redshifts above 3, although the absorption due to intervening neutral hydrogen is about 20 percent less than expected. The flux in the spectrum abruptly drops at a wavelength of about 910 A in the quasar's rest frame. This quick encounter with a Lyman-limit system is frequently seen in other quasars with redshifts above 4.3.

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