A Multimass Velocity Dispersion Model of 47 Tucanae Indicates No Evidence for an Intermediate-mass Black Hole

@article{Mann2019AMV,
  title={A Multimass Velocity Dispersion Model of 47 Tucanae Indicates No Evidence for an Intermediate-mass Black Hole},
  author={Christopher R. Mann and Harvey B. Richer and Jeremy Heyl and Jay Anderson and Jason S. Kalirai and Ilaria Caiazzo and Swantje D. M{\"o}hle and Alan M. Knee and Holger Baumgardt},
  journal={The Astrophysical Journal},
  year={2019}
}
In this paper, we analyze stellar proper motions in the core of the globular cluster 47 Tucanae to explore the possibility of an intermediate-mass black hole (IMBH) influence on the stellar dynamics. Our use of short-wavelength photometry affords us an exceedingly clear view of stellar motions into the very center of the crowded core, yielding proper motions for > 50,000 stars in the central 2'. We model the velocity dispersion profile of the cluster using an isotropic Jeans model. The density… Expand

Figures and Tables from this paper

On the black hole content and initial mass function of 47 Tuc
The globular cluster (GC) 47 Tuc has recently been proposed to host an intermediate-mass black hole (IMBH) or a population of stellar mass black holes (BHs). To shed light on its dark content, weExpand
Central kinematics of the Galactic globular cluster M80
We use spectra observed with the integral-field spectrograph Multi Unit Spectroscopic Explorer (MUSE) to reveal the central kinematics of the Galactic globular cluster Messier 80 (M80, NGC 6093).Expand
On the presence of intermediate black holes in three globular clusters
Abstract We investigate whether the globular clusters 47 Tuc, ω Cen and NGC 6624 contain intermediate-mass black holes (IMBHs) by fitting a large grid of N-body simulations against their surfaceExpand
Soliton solution for the central dark mass in 47-Tuc globular cluster and implications for the axiverse
We offer a standing wave explanation for the rising proper motions of stars at the center of the globular cluster 47-Tucanae, amounting to $\simeq 0.44\%$ of the total mass. We show this can beExpand
The mass budget for intermediate-mass black holes in dense star clusters
Intermediate-mass black holes (IMBHs) could form via runaway merging of massive stars in a young massive star cluster (YMC). We combine a suite of numerical simulations of YMC formation with aExpand
Multiwavelength Follow-up of the Hyperluminous Intermediate-mass Black Hole Candidate 3XMM J215022.4−055108
We recently discovered the X-ray/optical outbursting source 3XMM J215022.4-055108. It was best explained as the tidal disruption of a star by an intermediate-mass black hole of mass of a few tens ofExpand
Dynamical modelling of globular clusters: challenges for the robust determination of IMBH candidates
The presence or absence of intermediate-mass black holes (IMBHs) at the centre of Milky Way globular clusters (GCs) is still an open question. This is either due to observational restrictions orExpand
Spectroscopy of Binaries in Globular Clusters
The natural constants in the universe are adjusted so that dense and massive star forming regions can end up in gravitational bound star clusters, called globular clusters. These objects are found inExpand
Intermediate-mass black holes from stellar mergers in young star clusters
Intermediate-mass black holes (IMBHs) in the mass range $10^2\!-\!10^5\, \mathrm{M_{\odot }}$ bridge the gap between stellar black holes (BHs) and supermassive BHs. Here, we investigate theExpand
A consistency test for determining whether ultracompact dwarf galaxies could be the remnant nuclei of threshed galaxies
It has been suggested that ultra-compact dwarf (UCD) galaxies are the "threshed'" remains of larger galaxies. Simulations have revealed that extensive tidal-stripping may pare a galaxy back to itsExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 85 REFERENCES
The effect of stellar-mass black holes on the central kinematics of ω Cen: a cautionary tale for IMBH interpretations
The search for intermediate-mass black holes (IMBHs) in the centre of globular clusters is often based on the observation of a central cusp in the surface brightness profile and a rise towards theExpand
Deep HST Imaging in 47 Tucanae: A Global Dynamical Model
Multi-epoch observations with ACS and WFC3 on HST provide a unique and comprehensive probe of stellar dynamics within 47 Tucanae. We confront analytic models of the globular cluster with the observedExpand
Internal Kinematics of the Fornax Dwarf Spheroidal Galaxy
We present new radial velocity results for 176 stars in the Fornax dwarf spheroidal galaxy, of which at least 156 are probable Fornax members. We combine with previously published data to obtain aExpand
NEW LIMITS ON AN INTERMEDIATE-MASS BLACK HOLE IN OMEGA CENTAURI. II. DYNAMICAL MODELS
We present a detailed dynamical analysis of the projected density and kinematical data available for the globular cluster ω Centauri. We solve the spherical anisotropic Jeans equation for a givenExpand
Mass models of NGC 6624 without an intermediate-mass black hole
An intermediate-mass black hole (IMBH) was recently reported to reside in the centre of the Galactic globular cluster (GC) NGC 6624, based on timing observations of a millisecond pulsar (MSP) locatedExpand
MUSE crowded field 3D spectroscopy of over 12,000 stars in the globular cluster NGC 6397 - II. Probing the internal dynamics and the presence of a central black hole
We present a detailed analysis of the kinematics of the Galactic globular cluster NGC 6397 based on more than ~18,000 spectra obtained with the novel integral field spectrograph MUSE. While NGC 6397Expand
A Dynamical Model for the Globular Cluster G1
We present a comparison between the observational data on the kinematical structure of G1 in M31, obtained with the Hubble Space Telescope Wide Field Planetary Camera 2 and Space Telescope ImagingExpand
Gemini and Hubble Space Telescope Evidence for an Intermediate-Mass Black Hole in ω Centauri
The globular cluster ω Centauri is one of the largest and most massive members of the galactic system. However, its classification as a globular cluster has been challenged making it a candidate forExpand
Evidence for an intermediate-mass black hole in the globular cluster NGC 6624
PSR B1820−30A is located in the globular cluster NGC 6624 and is the closest known pulsar to the centre of any globular cluster. We present more than 25 yr of high-precision timing observations ofExpand
The old Nuclear Star Cluster in the Milky Way
We derive new constraints on the mass, rotation, orbit structure and statistical parallax of the Galactic old nuclear star cluster (NSC) and the mass of the supermassive black hole. We combine starExpand
...
1
2
3
4
5
...