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Several astrophysical scenarios have been proposed to explain the origin ofthe population of binary black hole (BBH) mergers detected in gravitationalwaves (GWs) by the LIGO/Virgo Collaboration. Among them, BBH mergers assembleddynamically in young massive and open clusters have been shown to producemerger rate densities consistent with LIGO/Virgo estimated rates. We use theresults of a suite of direct, high-precision $N$-body evolutionary models ofyoung massive and open clusters and build the population of BBH mergers, byaccounting for both a cosmologically-motivated model for the formation of youngmassive and open clusters and the detection probability of LIGO/Virgo. We showthat our models produce dynamically-paired BBH mergers that are well consistentwith the observed masses, mass ratios, effective spin parameters, and finalspins of the second Gravitational Wave Transient Catalog (GWTC-2).

Binary black hole mergers from young massive and open clusters: comparison to GWTC-2 gravitational wave data