Comparing Globular Cluster System Properties with Host Galaxy Environment
The Astrophysical Journal, 2023 We present Hubble Space Telescope photometry in the optical (F475X) and near-infrared (F110W) bands of the globular cluster (GC) systems of the inner halos of a sample of 15 massive elliptical galaxies.
Kate Hartman +4 more
doaj +1 more source
CHEMICAL TAGGING IN THE SDSS-III/APOGEE SURVEY: NEW IDENTIFICATIONS OF HALO STARS WITH GLOBULAR CLUSTER ORIGINS [PDF]
, 2016 We present new identifications of five red giant stars in the Galactic halo with chemical abundance patterns that indicate they originally formed in globular clusters.
S. Martell +8 more
semanticscholar +1 more source
Globular cluster population of the HST frontier fields galaxy J07173724+3744224 [PDF]
, 2018 We present the first measurement of the globular cluster population surrounding the elliptical galaxy J07173724+3744224 (z=0.1546). This galaxy is located in the foreground in the field-of-view of the Hubble Space Telescope (HST) Frontier Fields ...
Barkhouse, Wayne A. +6 more
core +3 more sources
Resonant Relaxation in Globular Clusters [PDF]
The Astrophysical Journal, 2019 Abstract Resonant relaxation has been discussed as an efficient process that changes the angular momenta of stars orbiting around a central supermassive black hole due to the fluctuating gravitational field of the stellar cluster. Other spherical stellar systems, such as globular clusters, exhibit a restricted form of this effect where ...
Yohai Meiron, Bence Kocsis
openaire +4 more sources
Back to the Future: Estimating Initial Globular Cluster Masses from their Present Day Stellar Mass Functions [PDF]
, 2015 We use N-body simulations to model the 12 Gyr evolution of a suite of star clusters with identical initial stellar mass functions over a range of initial cluster masses, sizes, and orbits.
J. Webb, N. Leigh
semanticscholar +1 more source
Globular Cluster Population of Hickson Compact Group 22a and 90c
, 2001 We present the first measurement of the globular cluster populations of galaxies in Hickson compact groups, in order to investigate the effect of these high density environments on the formation and evolution of globular cluster systems. Based on V and R
Barnes J. +9 more
core +2 more sources
Globular cluster mass-loss in the context of multiple populations [PDF]
, 2015 Many scenarios for the origin of the chemical anomalies observed in globular clusters (GCs; i.e., multiple populations) require that GCs were much more massive at birth, up to $10-100\times$, than they are presently.
N. Bastian, C. Lardo
semanticscholar +1 more source
Proceedings of the National Academy of Sciences, 1998 We review two new methods to determine the age of globular clusters (GCs). These two methods are more accurate than the classical isochrone fitting technique. The first method is based on the morphology of the horizontal branch and is independent of the distance modulus of the globular cluster.
openaire +3 more sources
POTASSIUM: A NEW ACTOR ON THE GLOBULAR CLUSTER CHEMICAL EVOLUTION STAGE. THE CASE OF NGC 2808 [PDF]
, 2015 We derive [K/Fe] abundance ratios for 119 stars in the globular cluster NGC 2808, all of them having O, Na, Mg, and Al abundances homogeneously measured in previous works. We detect an intrinsic star-to-star spread in the potassium abundance. Moreover [K/
A. Mucciarelli +5 more
semanticscholar +1 more source
Tidal stripping of globular clusters in a simulated galaxy cluster [PDF]
, 2015 Using a cosmological N-body numerical simulation of the formation of a galaxy cluster- sized halo, we analyze the temporal evolution of its globular cluster population.
Abadi, Mario +3 more
core +2 more sources