Simulations of Milky Way-mass galaxies reveal direction-dependent dynamical heating during stellar radial migration, with inward migrators heating, some cooling, and cold preservation uncommon especially for older stars.
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Galaxies become less concentrated, more asymmetric and less clumpy toward lower stellar masses, with bar fraction declining to zero near 10^8 solar masses and CAS parameters losing separating power in the dwarf regime.
Morphological merger fractions exceed close-pair fractions across 0.2<z<0.9 in DEVILS, with minimal sample overlap, attributed to different merger stages and timescales.
citing papers explorer
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Hot or Cold? Radial Redistribution of Stars in FIRE Simulations of Milky Way-Mass Galaxies and the Asymmetry of Inward versus Outward Migrators
Simulations of Milky Way-mass galaxies reveal direction-dependent dynamical heating during stellar radial migration, with inward migrators heating, some cooling, and cold preservation uncommon especially for older stars.
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Global trends in morphology from massive to dwarf galaxies
Galaxies become less concentrated, more asymmetric and less clumpy toward lower stellar masses, with bar fraction declining to zero near 10^8 solar masses and CAS parameters losing separating power in the dwarf regime.
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Deep Extragalactic VIsible Legacy Survey (DEVILS): Morphologically-selected galaxy merger fractions and their direct comparison to close-pair samples
Morphological merger fractions exceed close-pair fractions across 0.2<z<0.9 in DEVILS, with minimal sample overlap, attributed to different merger stages and timescales.