The RGB tip of galactic globular clusters and the revision of the axion-electron coupling bound
Astronomy & Astrophysics, 2020 Context. The production of neutrinos by plasma oscillations is the most important energy sink process operating in the degenerate core of low-mass red giant stars.
O. Straniero +7 more
semanticscholar +1 more source
Post-Newtonian Dynamics in Dense Star Clusters: Highly Eccentric, Highly Spinning, and Repeated Binary Black Hole Mergers. [PDF]
Physical Review Letters, 2017 We present models of realistic globular clusters with post-Newtonian dynamics for black holes. By modeling the relativistic accelerations and gravitational-wave emission in isolated binaries and during three- and four-body encounters, we find that nearly
C. Rodriguez +3 more
semanticscholar +1 more source
The Astrophysical JournalMost of the dynamical mass loss from star clusters is thought to be caused by the time variability of the tidal field (“tidal shocks”). Systematic studies of tidal shocks have been hampered by the fact that each tidal history is unique, implying both a ...
Jeremy J. Webb +2 more
doaj +1 more source
The ESO-VLT MIKiS Survey Reloaded: Exploring the Internal Kinematics of NGC 6440
The Astrophysical Journal, 2023 In the context of the ESO-VLT Multi-Instrument Kinematic Survey of Galactic globular clusters, here we present the line-of-sight velocity dispersion profile of NGC 6440, a massive globular cluster located in the Galactic bulge.
Silvia Leanza +9 more
doaj +1 more source
Modeling Formation of Globular Clusters: Beacons of Galactic Star Formation
, 2010 Modern hydrodynamic simulations of galaxy formation are able to predict accurately the rates and locations of the assembly of giant molecular clouds in early galaxies.
Gnedin, Oleg Y.
core +1 more source
Extremely alpha-Enriched Globular Clusters in Early-Type Galaxies: A Step towards the Dawn of Stellar Populations? [PDF]
, 2006 We compare [alpha/Fe], metallicity, and age distributions of globular clusters in elliptical, lenticular, and spiral galaxies, which we derive from Lick line index measurements.
Markus Kissler‐Patig +3 more
core +2 more sources
A stellar census in globular clusters with MUSE: Binaries in NGC 3201 [PDF]
Astronomy & Astrophysics, 2019 We utilise multi-epoch MUSE spectroscopy to study binary stars in the core of the Galactic globular cluster NGC 3201. Our sample consists of 3553 stars with 54 883 spectra in total comprising 3200 main-sequence stars up to 4 magnitudes below the turn-off.
B. Giesers +10 more
semanticscholar +1 more source
The Stellar Initial Mass Function of Early Dark Matter–free Gas Objects
The Astrophysical Journal LettersAmong the remarkable strides made by JWST is the discovery of the earliest star clusters found to date. These have been proposed as early progenitors of globular clusters, which are known to come from the early stages of star formation in the Universe ...
William Lake +8 more
doaj +1 more source
Formation histories of stars, clusters, and globular clusters in the E-MOSAICS simulations [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The formation histories of globular clusters (GCs) are a key diagnostic for understanding their relation to the evolution of the Universe through cosmic time.
M. Reina-Campos +4 more
semanticscholar +1 more source
PSR J1922+37: a 1.9 s Pulsar Discovered in the Direction of the Old Open Cluster NGC 6791
The Astrophysical Journal LettersMore than 300 pulsars have been discovered in Galactic globular clusters; however, none have been found in open clusters. Here we present results from a 20 hr survey of seven open clusters with the Five-hundred-meter Aperture Spherical radio Telescope ...
Xiao-Jin Liu +10 more
doaj +1 more source