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- W2999160932 abstract "ABSTRACT Molecular cloud complexes exhibit both (i) an unfettered Larson-type spectrum over much of their dynamic range, whilst (ii) still producing a much lower star formation rate than were this cascade to remain unfettered all the way down to star-forming scales. Here we explain the compatibility of these attributes with minimalist considerations of a mass-conserving fragmentation cascade, combined with estimates of stellar feedback. Of importance is that the amount of feedback needed to abate fragmentation and truncate the complex decreases with decreasing scale. The scale at which the feedback momentum matches the free-fall momentum marks a transition scale below most of the cascade is truncated and the molecular cloud complex dissipated. For a 106 M⊙ giant molecular cloud (GMC) complex starting with radius of ∼50 pc, the combined feedback from young stellar objects, supernovae, radiation, and stellar winds for a GMC cloud complex can truncate the cascade within an outer free-fall time but only after the cascade reaches parsec scales." @default.
- W2999160932 created "2020-01-23" @default.
- W2999160932 creator A5082736897 @default.
- W2999160932 date "2020-02-04" @default.
- W2999160932 modified "2023-10-17" @default.
- W2999160932 title "Cloud fragmentation cascades and feedback: on reconciling an unfettered inertial range with a low star formation rate" @default.
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- W2999160932 doi "https://doi.org/10.1093/mnras/staa326" @default.
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