Mass and Rate of Hierarchical Black Hole Mergers in Young, Globular and Nuclear Star Clusters [PDF]
Symmetry, 2020 Hierarchical mergers are one of the distinctive signatures of binary black hole (BBH) formation through dynamical evolution. Here, we present a fast semi-analytic approach to simulate hierarchical mergers in nuclear star clusters (NSCs), globular ...
M. Mapelli +5 more
semanticscholar +2 more sources
Bound star clusters observed in a lensed galaxy 460 Myr after the Big Bang. [PDF]
NatureThe Cosmic Gems arc is among the brightest and highly magnified galaxies observed at redshift z ≈ 10.2 (ref. 1). However, it is an intrinsically ultraviolet faint galaxy, in the range of those now thought to drive the reionization of the Universe2–4 ...
Adamo A +27 more
europepmc +2 more sources
The influence of gas expulsion and initial mass-segregation on the stellar mass-function of globular star clusters [PDF]
, 2008 Recently de Marchi, Paresce & Pulone (2007) studied a sample of twenty globular clusters and found that all clusters with high concentrations have steep stellar mass-functions while clusters with low concentration have comparatively shallow mass ...
D'Agostino R. B. +9 more
core +2 more sources
Signatures of multiple stellar populations in unresolved extragalactic globular/ young massive star clusters [PDF]
, 2013 We present an investigation of potential signatures of the formation of multiple stellar populations in recently formed extragalactic star clusters.
Finzell, Thomas +2 more
core +3 more sources
ELVES II: Globular Clusters and Nuclear Star Clusters of Dwarf Galaxies: the Importance of Environment [PDF]
Astrophysical Journal, 2021 We present the properties of the globular clusters (GCs) and nuclear star clusters (NSCs) of low-mass (105.5 < M ⋆ < 108.5 M ⊙) early-type satellites of Milky Way–like and small group hosts in the Local Volume (LV) using deep, ground-based data from the ...
S. Carlsten +3 more
semanticscholar +1 more source
The Cosmic Evolution of Binary Black Holes in Young, Globular and Nuclear Star Clusters: Rates, Masses, Spins and Mixing Fractions [PDF]
, 2021 The growing population of binary black holes (BBHs) observed by gravitational wave detectors is a potential Rosetta stone for understanding their formation channels. Here, we use an upgraded version of our semi-analytic codes fastcluster and cosmoRate to
M. Mapelli +4 more
semanticscholar +1 more source
Hierarchical black hole mergers in young, globular and nuclear star clusters: the effect of metallicity, spin and cluster properties [PDF]
, 2021 We explore hierarchical black hole (BH) mergers in nuclear star clusters (NSCs), globular clusters (GCs) and young star clusters (YSCs), accounting for both original and dynamically assembled binary BHs (BBHs).
M. Mapelli +10 more
semanticscholar +1 more source
Multiple Populations in Star Clusters [PDF]
Universe, 2022 We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams.
A. Milone, A. Marino
semanticscholar +1 more source
The Astrophysical Journal, 2023 We present a photometric analysis of globular cluster 47 Tuc (NGC 104) using near-IR imaging data from the GeMS/GSAOI Galactic Globular Cluster Survey (G4CS), which is in operation at Gemini-South telescope.
Mirko Simunovic +7 more
doaj +1 more source
The Astronomical Journal, 2023 Wide-field and deep DECam multiband photometry, combined with HST data for the core of the Galactic globular cluster NGC 2808, allowed us to study the distribution of various stellar subpopulations and stars in different evolutionary phases out to the ...
Christian I. Johnson +9 more
doaj +1 more source