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Quasars and their enviroments along cosmic history

Published online by Cambridge University Press:  01 December 2004

Tiziana Di Matteo ,
Rupert A.C. Croft ,
Volker Springel  and
Lars Henrquist
Tiziana Di Matteo
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85740 Garching bei München, Germany e-mail: tiziana@mpa-garching.mpg.de, volker@mpa-garching.mpg.de
Rupert A.C. Croft
Affiliation:
Carnegie-Mellon University, Dept. of Physics, 5000 Forbes Ave., Pittsburgh, PA 15213, USA e-mail: rcroft@cmu.edu
Volker Springel
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85740 Garching bei München, Germany e-mail: tiziana@mpa-garching.mpg.de, volker@mpa-garching.mpg.de
Lars Henrquist
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA e-mail: lhernquist@cfa.harvard.edu
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Abstract

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The observed properties of supermassive black holes suggest a fundamental link between their assembly and the formation of their host spheroids. We model the growth and activity of black holes in galaxies using ΛCDM cosmological hydrodynamic simulations. We study the evolution of the metal enrichment in quasar hosts and hence explore the relationship between star/spheroid formation and black hole growth/activity in galaxies. Using the simulations we approach the epoch of the first quasars and the first significant star formation activity. We show that the hosts of the rare bright quasars at z∼5−6 have star formation rates of several hundred $\rm\thinspace M_{\odot}\yr^{-1},$ and halo masses of order ∼1012$\rm\thinspace M_{\odot}$. Already at these redshifts they have supersolar ($Z/Z_{\odot} \sim 2-3$) central metallicities, with a mild dependence of metallicity on luminosity, consistent with observed trends.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
INVITED LECTURES
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 471 - 476
Copyright
© 2004 International Astronomical Union