Observations of four faint quasars surrounding the Tololo 1037-271/1038-272 quasar pair

Details Observations of four faint quasars surrounding the Tololo 1037-271/1038-272 quasar pair Observations of four faint quasars surrounding the Tololo 1037-271/1038-272 quasar pair

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..710j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 15, 1988, p. 710-716.

Astronomy and Astrophysics

Astrophysics

10

Absorption Spectra, Astronomical Spectroscopy, Galactic Clusters, Quasars, Emission Spectra, Red Shift

Scientific paper

Four faint quasar candidates surrounding the wide quasar pair Tololo 1037-271/1038-272 have been observed with the aim of searching for absorption due to the intervening supercluster proposed to explain the strong correlated absorption seen between z = 1.95 and z = 2.15 in these two objects. A potential positive detection is reported in the case of Tol 1035-276, located at z(em) = 2.15, 39 arcmin southwest of the pair. Both the emission redshift of this object and two of the absorption systems seen in its spectrum match corresponding systems in Tol 1035-271/1038-272 to an accuracy well within the velocity splitting expected from the Hubble expansion at the large angular separation. In contrast, no correlated absorption is detected at a larger separation in the spectrum of Tol 1033-269 located at z(em) = 2.42, 62 arcmin west of the pair. This may indicate that the intervening supercluster has an elongated shape with its largest dimension aligned with the line of sight.

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