Could compact stars in globular clusters constrain dark matter?

R Garani, N Raj… - Journal of Cosmology and …, 2023 - iopscience.iop.org
The dark matter content of globular clusters, highly compact gravity-bound stellar systems, is
unknown. It is also generally unknowable, due to their mass-to-light ratios typically ranging …

The e-TidalGCs project-Modeling the extra-tidal features generated by Galactic globular clusters

S Ferrone, P Di Matteo, A Mastrobuono-Battisti… - Astronomy & …, 2023 - aanda.org
We present the e-TidalGCs project, aimed at modeling and predicting the extra-tidal features
surrounding all Galactic globular clusters for which 6D phase-space information, masses …

A search for stellar structures around nine outer halo globular clusters in the Milky Way

S Zhang, D Mackey, GS Da Costa - Monthly Notices of the Royal …, 2022 - academic.oup.com
We use deep imaging from the Dark Energy Camera to explore the peripheral regions of
nine globular clusters in the outer halo of the Milky Way. Apart from Whiting 1 and NGC …

EDGE: the puzzling ellipticity of Eridanus II's star cluster and its implications for dark matter at the heart of an ultra-faint dwarf

MDA Orkney, JI Read, O Agertz… - Monthly Notices of …, 2022 - academic.oup.com
ABSTRACT The Eridanus II (EriII)'ultra-faint'dwarf has a large (15 pc) and low-mass (4.3×
103 M⊙) star cluster (SC) offset from its centre by 23±3 pc in projection. Its size and offset …

Properties of globular clusters formed in dark matter mini-halos

E Vitral, P Boldrini - Astronomy & Astrophysics, 2022 - aanda.org
We seek to differentiate dynamical and morphological attributes between globular clusters
(GCs) that were formed inside their own dark matter (DM) mini-halo from those who were …

On the physical size of the Milky Way globular cluster NGC 7089 (M2)

AE Piatti - Monthly Notices of the Royal Astronomical Society, 2022 - academic.oup.com
We study the outer regions of the Milky Way globular cluster NGC 7089 based on new Dark
Energy Camera observations. The resulting background-cleaned stellar density profile …

Dark Energy Camera photometry reveals extra-tidal stars around the Milky Way globular cluster NGC 6864 (M75)

AE Piatti - Monthly Notices of the Royal Astronomical Society, 2022 - academic.oup.com
Globular clusters are prone to lose stars while moving around the Milky Way. These stars
escape the clusters and are distributed throughout extended envelopes or tidal tails …

The e-TidalGCs project

S Ferrone, P Di Matteo… - ASTRONOMY & …, 2023 - research.unipd.it
We present the e-TidalGCs project, aimed at modeling and predicting the extra-tidal features
surrounding all Galactic globular clusters for which 6D phase-space information, masses …

Galaxy Dancers: a dynamical study of globular star clusters

EF Vitral - 2022 - theses.hal.science
Globular clusters are roughly spherical collections of hundreds of thousands or millions of
stars that orbit a host galaxy. Very old, with typical ages similar to the one of their hosts …