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Coevolution (or not) of supermassive black holes and host galaxies: Black hole scaling relations are not biased by selection effects

Published online by Cambridge University Press:  14 May 2020

John Kormendy
John Kormendy*
Affiliation:
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching by Munich, Germany Munich University Observatory, Scheinerstrasse 1, D-81679 Munich, Germany Department of Astronomy, University of Texas at Austin, 2515 Speedway, Mail Stop C1400, Austin, TX78712-1205, USA email: [email protected]
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Abstract

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The oral version of this paper summarized Kormendy & Ho 2013, ARA&A, 51, 511. However, earlier speakers at this Symposium worried that selection effects bias the derivation of black hole scaling relations. I therefore added – and this proceedings paper emphasizes – a discussion of why we can be confident that selection effects do not bias the observed correlations between BH mass M• and the luminosity, stellar mass, and velocity dispersion of host ellipticals and classical bulges. These are the only galaxy components that show tight BH-host correlations. The scatter plots of M• with host properties for pseudobulges and disks are upper envelopes of scatter that does extend to lower BH masses. BH correlations are most consistent with a picture in which BHs coevolve only with classical bulges and ellipticals. Four physical regimes of coevolution (or not) are suggested by Kormendy & Ho 2013 and are summarized here.

Keywords

black hole physicsgalaxies: bulgesgalaxies: elliptical and lenticularcDgalaxies: evolutiongalaxies: kinematics and dynamicsgalaxies: nucleigalaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S353: Galactic Dynamics in the Era of Large Surveys , June 2019 , pp. 186 - 198
Copyright
© International Astronomical Union 2020

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