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Motivated by observational searches for massive black hole (MBH) pairs at kiloparsec separations we develop a semi-analytic model to describe their orbital evolution under the influence of stellar and gaseous dynamical friction (DF). The…

星系天体物理 · 物理学 2021-08-05 Kunyang Li , Tamara Bogdanovic , David R. Ballantyne

We present a study of relations between the masses of the central supermassive black holes (SMBHs) and the atmospheric gas temperatures and luminosities measured within a range of radii between $R_{\rm e}$ and 5$R_{\rm e}$, for a sample of…

星系天体物理 · 物理学 2019-07-24 K. Lakhchaura , N. Truong , N. Werner

The stellar content of galaxies is tightly connected to the mass and growth of their host dark matter halos. Observational constraints on this relation remain limited, particularly for low-mass groups, leaving uncertainties in how galaxies…

Dark Matter (DM) is usually studied in connection with rotational curves in the outskirts of the galaxies. However, the role of DM might be different in the galactic bulges and centers where Supermassive Black Holes (SMBHs) dominate the…

广义相对论与量子宇宙学 · 物理学 2022-09-07 Davide Batic , Joud Mojahed Faraji , Marek Nowakowski

The correlation between the mass of supermassive black holes in galaxy nuclei and the mass of the galaxy spheroids or bulges (or more precisely their central velocity dispersion), suggests a common formation scenario for galaxies and their…

天体物理学 · 物理学 2015-06-24 Francoise Combes

Understanding the processes that drive the formation of black holes (BHs) is a key topic in observational cosmology. While the observed $M_{\mathrm{BH}}$--$M_{\mathrm{Bulge}}$ correlation in bulge-dominated galaxies is thought to be…

It is now well-established that a dark, compact object (DCO), very likely a massive black hole (MBH) of around four million solar masses is lurking at the centre of the Milky Way. While a consensus is emerging about the origin and growth of…

宇宙学与河外天体物理 · 物理学 2018-12-05 Pau Amaro-Seoane

Empirical correlations between the masses of supermassive black holes (SMBHs) and properties of their host galaxies are well-established. Among these is the correlation with the flat rotation velocity of each galaxy measured either at a…

Observations in the local universe show a tight correlation between the masses of supermassive black holes (SMBHs; $M_{\rm BH}$) and host-galaxy bulges ($M_{\rm bulge}$), suggesting a strong connection between SMBH and bulge growth.…

星系天体物理 · 物理学 2019-03-13 Guang Yang , W. N. Brandt , D. M. Alexander , C. -T. J. Chen , Q. Ni , F. Vito , F. -F. Zhu

Some S0 and early-type spiral galaxies possess "composite bulges"; in these galaxies, the photometric bulge -- the central stellar light in excess of the disk light -- is composed of both a "(disky) pseudobulge", with a flattened, disklike…

宇宙学与河外天体物理 · 物理学 2010-02-09 Peter Erwin

The empirical model of Lu et al. 2014a for the relation between star formation rate and halo mass growth is adopted to predict the classical bulge mass ($M_{\rm cb}$) - total stellar mass ($M_\star$) relation for central galaxies. The…

星系天体物理 · 物理学 2015-06-22 Zhankui Lu , H. J. Mo

Despite observed strong correlations between central supermassive black holes (SMBHs) and star-formation in galactic nuclei, uncertainties exist in our understanding of their coupling. We present observations of the ratio of…

宇宙学与河外天体物理 · 物理学 2015-05-18 Ezequiel Treister , Priyamvada Natarajan , David Sanders , C. Megan Urry , Kevin Schawinski , Jeyhan Kartaltepe

Supermassive black holes appear to be uniquely associated with galactic bulges. The mean ratio of black hole mass to bulge mass was until recently very uncertain, with ground based, stellar kinematical data giving a value roughly an order…

天体物理学 · 物理学 2007-05-23 David Merritt , Laura Ferrarese

I review the status of observational determinations of central masses in nearby galactic nuclei. Results from a variety of techniques are summarized, including ground-based and space-based optical spectroscopy, radio VLBI measurements of…

天体物理学 · 物理学 2007-05-23 Luis C. Ho

Possible connections between central black-hole (BH) growth and host-galaxy compactness have been found observationally, which may provide insight into BH-galaxy coevolution: compact galaxies might have large amounts of gas in their centers…

星系天体物理 · 物理学 2019-09-25 Q. Ni , G. Yang , W. N. Brandt , D. M. Alexander , C. -T. J. Chen , B. Luo , F. Vito , Y. Q. Xue

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…

星系天体物理 · 物理学 2020-05-20 John Kormendy

We have examined the relationship between supermassive black hole mass (M$_{BH}$) and the stellar mass of the host spheroid (M$_{sph,*}$) for a sample of 75 nearby galaxies. To derive the spheroid stellar masses we used improved 2MASS…

宇宙学与河外天体物理 · 物理学 2014-08-04 Nicholas Scott , Alister W. Graham , James Schombert

Understanding whether the bulge or the halo provides the primary link to the growth of supermassive black holes has strong implications for galaxy evolution and supermassive black hole formation itself. In this paper, we approach this issue…

宇宙学与河外天体物理 · 物理学 2015-06-15 Vincenzo Pota , Alister W. Graham , Duncan A. Forbes , Aaron J. Romanowsky , Jean P. Brodie , Jay Strader

We report the discovery of a positive correlation between supermassive black hole mass and dark matter halo concentration at fixed halo mass in cosmological hydrodynamical simulations. Analyzing central galaxies in TNG100 (N = 18,954),…

星系天体物理 · 物理学 2025-12-30 John K. Nino

Supermassive black holes have been detected in all galaxies that contain bulge components when the galaxies observed were close enough so that the searches were feasible. Together with the observation that bigger black holes live in bigger…

星系天体物理 · 物理学 2015-05-27 John Kormendy , Ralf Bender