220 citations · 1.1k across the 21 of their papers we have counts for
14 papers · 1 filter
Multimass modelling of Milky Way globular clusters -- I. Implications on their stellar initial mass function above 1 M
Nolan Dickson, Vincent Hénault-Brunet, Holger Baumgardt +2
The distribution of stars and stellar remnants (white dwarfs, neutron stars, black holes) within globular clusters holds clues about their formation and long-term evolution, with i…
Dynamics in the outskirts of four Milky Way globular clusters: it's the tides that dominate
Zhen Wan, Anthony D. Arnold, William H. Oliver +17
We present the results of a spectroscopic survey of the outskirts of 4 globular clusters -- NGC 1261, NGC 4590, NGC 1904, and NGC 1851 -- covering targets within 1 degree from the…
MUSE narrow field mode observations of the central kinematics of M15
Christopher Usher, Sebastian Kamann, Mark Gieles +4
We present observations of the stellar kinematics of the centre of the core collapsed globular cluster M15 obtained with the MUSE integral field spectrograph on the VLT operating i…
The dynamics of the globular cluster NGC3201 out to the Jacobi radius
Zhen Wan, William Oliver, Holger Baumgardt +7
As part of a chemo-dynamical survey of five nearby globular clusters with 2dF/AAOmega on the AAT, we have obtained kinematic information for the globular cluster NGC3201. Our new o…
Globular cluster number density profiles using Gaia DR2
T. J. L. de Boer, M. Gieles, E. Balbinot +4
Using data from Gaia DR2, we study the radial number density profiles of the Galactic globular cluster sample. Proper motions are used for accurate membership selection, especially…
A-type stars in the Canada-France Imaging Survey I. The stellar halo of the Milky Way traced to large radius by blue horizontal branch stars
Guillaume F. Thomas, Alan W. McConnachie, Rodrigo A. Ibata +14
We present the stellar density profile of the outer halo of the Galaxy traced over a range of Galactocentric radii from kpc by blue horizontal branch (BHB) stars…
The unexpected kinematics of multiple populations in NGC6362: do binaries play a role?
E. Dalessandro, A. Mucciarelli, M. Bellazzini +9
We present a detailed analysis of the kinematic properties of the multiple populations (MPs) in the low-mass Galactic globular cluster NGC6362 based on a sample of about 500 member…
The effect of stellar-mass black holes on the central kinematics of omega Cen: a cautionary tale for IMBH interpretations
Alice Zocchi, Mark Gieles, Vincent Hénault-Brunet
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…
Concurrent formation of supermassive stars and globular clusters: implications for early self-enrichment
Mark Gieles, Corinne Charbonnel, Martin Krause +7
We present a model for the concurrent formation of globular clusters (GCs) and supermassive stars (SMSs, ) to address the origin of the HeCNONaMgAl abundance…
Mass models of NGC 6624 without an intermediate-mass black hole
Mark Gieles, Eduardo Balbinot, Rashid Yaaqib +4
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 p…
Differences in the rotational properties of multiple stellar populations in M 13: a faster rotation for the "extreme" chemical subpopulation
M. J. Cordero, V. Hénault-Brunet, C. A. Pilachowski +3
We use radial velocities from spectra of giants obtained with the WIYN telescope, coupled with existing chemical abundance measurements of Na and O for the same stars, to probe the…
A stellar-mass black hole population in the globular cluster NGC 6101?
Miklos Peuten, Alice Zocchi, Mark Gieles +2
Dalessandro et al. observed a similar distribution for blue straggler stars and main-sequence turn-off stars in the Galactic globular cluster NGC 6101, and interpreted this feature…
Multiple populations in globular clusters: constraints from kinematics and dynamics
Vincent Hénault-Brunet
We discuss constraints on the formation of multiple populations in globular clusters (GCs) imposed by their present-day kinematics (velocity dispersion and anisotropy) and spatial…
On the uniqueness of kinematical signatures of intermediate-mass black holes in globular clusters
Alice Zocchi, Mark Gieles, Vincent Hénault-Brunet
Finding an intermediate-mass black hole (IMBH) in a globular cluster (GC), or proving its absence, is a crucial ingredient in our understanding of galaxy formation and evolution. T…