VLT/ISAAC spectra of the Hβregion in intermediate redshift quasars

2004/05/31 by J. W. Sulentic, G. M. Stirpe, P. Marziani +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1051/0004-6361:20035912

published as Astron.Astrophys. 423 (2004) 121-132 · 17 pages, 13 figures, accepted by A&A; added references and minor corrections

arxiv created 2004/07/02 · openalex publication_date 2004/07/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We present high S/N spectra of the Hβ region in 17 intermediate redshift () quasars. The spectra represent first results of our campaign to test the redshift/luminosity robustness of the so-called Eigenvector 1 (E1) parameter space as developed for low redshift AGN in Sulentic et al. (2000, ApJ, 536, L5). The new quasars span the luminosity range while most of our low redshift sample involve sources in the range . The high redshift sources show E1 parameter values and domain occupation that are similar to our low redshift sample supporting earlier findings that E1 parameters are uncorrelated with source luminosity. Elementary accretion theory can account for a systematic increase of the minimum observed Hβ profile width with source luminosity. Narrow line Seyfert 1 sources with MB= -28 show FWHM(Hβ) as much as 2000 km s-1 broader than those with MB= -22. A possible change in the higher redshift/luminosity sources involves systematically weaker [OIII]4959,5007 narrow line emission.

Citations

• Redshifted and Blueshifted Broad Lines in Luminous Quasars
• Black Hole Mass and Eddington Ratio as Drivers for the Observable Properties of Radio‐loud and Radio‐quiet QSOs
• Eddington Accretion and QSO Emission Lines at z ~2
• On the Linearity of the Black Hole–Bulge Mass Relation in Active and in Nearby Galaxies
• Narrow-line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Early Data Release
• Comparative Analysis of the High- and Low-Ionization Lines in the Broad-Line Region of Active Galactic Nuclei
• Near‐Infrared Spectroscopy of High‐Redshift Active Galactic Nuclei. I. A Metallicity–Accretion Rate Relationship
• Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the Black Hole Mass–Velocity Dispersion Relationship for Active Galactic Nuclei
• Phenomenology of Broad Emission Lines in Active Galactic Nuclei
• The relationship between radio luminosity and black hole mass in optically selected quasars
• Variability of FeiiEmission Features in the Seyfert 1 Galaxy NGC 5548
• Central Masses and Broad‐Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation‐Mapping Database
• Elemental Abundances in Quasistellar Objects: Star Formation and Galactic Nuclear Evolution at High Redshifts
• Disentangling microlensing and differential extinction in the double QSO HE 0512–3329