Journal Article

The quasar relation through cosmic time – I. Data set and black hole masses

R. Decarli, R. Falomo, A. Treves, J. K. Kotilainen, M. Labita and R. Scarpa

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 402, issue 4, pages 2441-2452
Published in print March 2010 | ISSN: 0035-8711
Published online March 2010 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.16048.x
The quasar  relation through cosmic time – I. Data set and black hole masses

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We study the relation as a function of cosmic time in a sample of 96 quasars from z= 3 to the present epoch. In this paper, we describe the sample, the data sources and the new spectroscopic observations. We then illustrate how we derive from single-epoch spectra, pointing out the uncertainties in the procedure. In a companion paper, we address the dependence of the ratio between the black hole mass and the host-galaxy luminosity and mass on cosmic time.

Keywords: galaxies: active; galaxies: nuclei; quasars: emission lines; quasars: general

Journal Article.  5614 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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