activity
19922019
most citedEigenvector 1: An Optimal Correlation Space for Active Galactic Nuclei

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astro-ph1992★ 22 cited

Evidence for a Very Broad Line Region in PG 1138+222

Paolo Marziani, Jack W. Sulentic

We present a high S/N spectrum for the quasar PG 1138+222. We detect a very broad HeII4686 emission line component with twice the FWHM of the conventional broad line region (BLR…