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Submillimetre Studies of Prestellar and Starless Cores in the Ophiuchus, Taurus and Cepheus Molecular Clouds (Paperback, Softcover reprint of the original 1st ed. 2017)
Loot Price: R3,744
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Submillimetre Studies of Prestellar and Starless Cores in the Ophiuchus, Taurus and Cepheus Molecular Clouds (Paperback, Softcover reprint of the original 1st ed. 2017)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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This thesis presents studies of the starless core populations of
three nearby molecular clouds made as part of the James Clerk
Maxwell Telescope Gould Belt Survey. These studies combine
observations made using the SCUBA-2 submillimetre camera with data
from several other instruments, including the Herschel Space
Observatory, to identify and characterise starless cores in the
Ophiuchus, Taurus and Cepheus molecular clouds. The temperatures,
masses and stability against collapse of the starless cores are
measured, the latter through detailed virial analysis, including a
determination of the external pressure on the cores. The book
illustrates core stability on the "virial plane", in which core
stability is plotted against core confinement mode, showing that
starless cores are typically confined by external pressure rather
than self-gravity. It also presents an analytical model of the
evolution of starless cores in the "virial plane", demonstrating
that a pressure-confined starless core may evolve due to virial
stability rather than gravitational collapse, which means that a
core can only be definitively considered to be prestellar if it is
gravitationally bound.
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