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Companions to High Redshift Quasars

Published online by Cambridge University Press:  30 March 2016

Esther M. Hu
Esther M. Hu*
Affiliation:
Institute for Astronomy University of Hawaii2680 Woodlawn Drive Honolulu, HI 96822USA

Abstract

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Lyman a companions to high-redshift quasars appear associated with radio activity in the quasar. Of the five known companion systems seen at typical Lα fluxes of a few x 10-16 ergs cm-2 sec-1, all are associated with quasars which are radio sources, and lie within a few arcseconds of the quasar. We summarize results of searches for the companions, and report on subsequent investigations into the spectral energy distribution and radio studies of these objects. Multi-color imaging from 3400 Å to 2.2/μ shows the companion to PKS 1614+051 possesses a blue SED similar to an irregular at that redshift. VLA observations show double-lobed structure around Q1033+137 with depolarization of the counterjet lobe.

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 693 - 694
Copyright
Copyright © Kluwer 1992

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