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Hβ spectra of high-redshift QSOs: Eigenvector 1 at high luminosities

  • G. M. Stirpe (a1), J. W. Sulentic (a2), P. Marziani (a3), R. Zamanov (a4), M. Calvani (a3) and V. Braito (a5)...

Abstract

We present VLT–ISAAC spectra of unprecedented S/N and resolution for the Hβ region in a sample of n = 17 quasars in the range z=0.8–2.5. The data represent our first attempt to test source occupation and line properties for the Eigenvector 1 parameter space that was defined using a sample of sources with z<0.8. We find no strong luminosity/redshift dependent effects with the possible exception of an increase in the minimum broad line profile width from 1000 to 3000 km s−1 between MB≈−20 and −28.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

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Based on observations collected at the European Southern Observatory, Chile. Proposal ref.: ESO 68.B–0364(A)

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Hβ spectra of high-redshift QSOs: Eigenvector 1 at high luminosities

  • G. M. Stirpe (a1), J. W. Sulentic (a2), P. Marziani (a3), R. Zamanov (a4), M. Calvani (a3) and V. Braito (a5)...

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