Statistics
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993hst..prop.4504w&link_type=abstract
HST Proposal ID #4504
Statistics
Hst Proposal Id #4504
Scientific paper
We propose to complete our program to produce THE definitive sample of radio loud quasar spectra, each measured from rest wavelength below Ly-alpha to beyond H-alpha. This is the ONLY large complete HST sample being used to investigate the intrinsic properties of quasars. The FOS data are being supplemented with quasi-simultaneous optical and infrared spectroscopy from McDonald Observatory, KPNO, UKIRT, and CTIO. The ~ 50 objects are selected to cover a wide range in radio-core dominance - a measure of inclination of the central engine's axis; we constrain the range in extended radio luminosity, which is inclination INDEPENDENT, in order to test the dependence of spectro- scopic parameters on inclination alone. This is a minumum sample size for meaningful statistics. We accurately compare strengths of different emission lines, their profiles and profile shifts, and continuum shapes, and use exist- ing radio & X-ray data to investigate some basic questions: Are there inclined accretion disks? Is there stratification of the broad line region (BLR)? Is there angle dependent and luminosity-dependent ionization of the BLR? What is the origin of the Fe II emission? What is the importance of line & continuum reddening? How is X-ray & radio emission related to optical & UV properties? The spectroscopy is being complemented by our VLA mapping, B, R & radio-core variability monitoring. In a recent preprint we demonstrate the usefulness of our optical-UV data in a first extensive study of the NLR in very luminous AGNs.
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