The case for the fundamental MBH-σ relation

Marsden, Christopher, Shankar, F, Ginolfi, Michele and Zubovas, Kastytis (2020) The case for the fundamental MBH-σ relation. Frontiers in Physics, 8, [61]. (doi:10.3389/fphy.2020.00061).

Record type: Article

Abstract

Strong scaling relations between host galaxy properties (such as stellar mass, bulge mass, luminosity, effective radius etc) and their nuclear supermassive black hole's mass point toward a close co-evolution. In this work, we first review previous efforts supporting the fundamental importance of the relation between supermassive black hole mass and stellar velocity dispersion (M _BH-σ _e). We then present further original work supporting this claim via analysis of residuals and principal component analysis applied to some among the latest compilations of local galaxy samples with dynamically measured supermassive black hole masses. We conclude with a review on the main physical scenarios in favor of the existence of a M _BH-σ _e relation, with a focus on momentum-driven outflows.

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fundamentalMBH-σrelation - Accepted Manuscript

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Published date: 17 March 2020

Additional Information: Funding Information: CM acknowledges funding from the ESPRC for his Ph.D. FS acknowledges partial support from a Leverhulme Trust Research Fellowship. We thank de Nicola and Alessandro Marconi for sharing their data in electronic format. We acknowledge extensive use of the Python libraries astropy, matplotlib, numpy, pandas, and scipy. Publisher Copyright: © Copyright © 2020 Marsden, Shankar, Ginolfi and Zubovas.

Keywords: galaxies, principal component analysis, scaling relations, supermassive black holes, velocity dispersion