Discovery of a New Gravitational Lens System
Charles R. LawrenceDepartment of Physics, Massachusetts Institute of Technology, Cambridge 02139, and Radio Astronomy 105-24, California Institute of Technology, Pasadena 91125Donald P. SchneiderDepartment of Astronomy, California Institute of TechnologyMaarten SchmidtDepartment of Astronomy, California Institute of TechnologyC. L. BennettDepartment of Physics, Massachusetts Institute of TechnologyJacqueline N. HewittDepartment of Physics, Massachusetts Institute of TechnologyB. F. BurkeDepartment of Physics, Massachusetts Institute of TechnologyEdwin L. TurnerPrinceton University Observatory, Peyton Hall, Princeton, New Jersey 08544James E. GunnPrinceton University Observatory, Peyton Hall, Princeton, New Jersey 08544
1984en
ABI
Аннотация
A new gravitational lens system, the triple radio source MG2016+112, has been discovered. Five emission lines at a redshift of 3.2733+/-0.0014 have been identified in the spectra of two stellar objects of magnitude 22.5 coincident with radio components 3.4 arc seconds apart. The lines are the narrowest ever observed in objects at such a large redshift. The redshift of a 23rd-magnitude extended optical object coincident with the third radio component has not been determined spectroscopically, but its known optical properties are consistent with those of a giant elliptical galaxy with a redshift of about 0.8.
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