Rapid formation of a very massive star (>50000 M⊙), and subsequently, of an IMBH, from runaway collisions - Direct N-body and Monte Carlo simulations of dense star clusters

Open Access

Fig. 7

Temporal evolution of a hard binary system during between 1.68 and 1.80 Myr. This binary has the primary star as the VMS, with a mass of 28 891 M_⊙ and a secondary star with a mass of 75 M_⊙. This interaction lasts approximately 0.1 Myr. The top panel shows the semimajor axis, while the bottom panel shows the eccentricity.

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