Formation and evolution of young massive clusters in galaxy mergers: the <tt>SMUGGLE</tt> view

نویسندگان

چکیده

Galaxy mergers are known to host abundant young massive cluster (YMC) populations, whose formation mechanism is still not well-understood. Here, we present a high-resolution galaxy merger simulation with explicit star and stellar feedback prescriptions investigate how affect the properties of interstellar medium YMCs. Compared controlled an isolated galaxy, mass fraction dense high-pressure gas much higher in mergers. Consequently, function both molecular clouds YMCs becomes shallower extends masses. Moreover, efficiency significantly enhanced correlates positively rate surface density pressure. We track orbits time evolution tidal fields during course merger. At early stage merger, field strength YMC mass, $\lambda_{\rm tid}\propto M^{0.71}$, which systematically affects shape age distribution later times, most closely follow their galaxies, gradually sinking into center remnant due dynamical friction, quickly dissolved via efficient disruption. Interestingly, formed first passage, mostly tails bridges, distributed over wide range galactocentric radii, greatly increasing survivability because weaker outskirts system. These promising candidates for globular clusters that survive day.

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ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society

سال: 2022

ISSN: ['0035-8711', '1365-8711', '1365-2966']

DOI: https://doi.org/10.1093/mnras/stac1136