A1 Refereed original research article in a scientific journal
Coevolution of supermassive black holes and their host galaxies
Authors: Kotilainen JK, Falomo R, Labita M, Scarpa R, Treves A
Publication year: 2007
Journal name in sourceCENTRAL ENGINE OF ACTIVE GALACTIC NUCLEI
Journal acronym: ASTR SOC P
Volume: 373
First page : 682
Last page: 683
Number of pages: 2
ISBN: 978-1-58381-307-2
Abstract
Accretion onto a black hole (BH) is the most viable explanation for the huge emitted power in active galaxies. A wealth of observations have shown the presence of a BH in many nearby inactive bulges, suggesting that all massive spheroids harbor a BH. At low redshift, fundamental correlations have been found between the BH mass and the luminosity (mass) and the central velocity dispersion of the host galaxy bulge, indicating a strong relationship between the formation and evolution of massive bulges and their central BH. We discuss our ongoing program to investigate the cosmic evolution of this relationship. Rest-UV spectroscopy is used to determine the virial BH masses of a large sample of high-redshift quasars for which the host galaxy luminosity is reliably determined from our previous VLT imaging.
Accretion onto a black hole (BH) is the most viable explanation for the huge emitted power in active galaxies. A wealth of observations have shown the presence of a BH in many nearby inactive bulges, suggesting that all massive spheroids harbor a BH. At low redshift, fundamental correlations have been found between the BH mass and the luminosity (mass) and the central velocity dispersion of the host galaxy bulge, indicating a strong relationship between the formation and evolution of massive bulges and their central BH. We discuss our ongoing program to investigate the cosmic evolution of this relationship. Rest-UV spectroscopy is used to determine the virial BH masses of a large sample of high-redshift quasars for which the host galaxy luminosity is reliably determined from our previous VLT imaging.
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