Browsing Department of Materials Science and Metallurgy by Subject "planets and satellites: formation"
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In situ accretion of gaseous envelopes on to planetary cores embedded in evolving protoplanetary discs
(Oxford University PressMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017-09-21)The core accretion hypothesis posits that planets with significant gaseous envelopes accreted them from their protoplanetary discs after the formation of rocky/icy cores. Observations indicate that such exoplanets exist ...
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On dust–gas gravitational instabilities in protoplanetary discs
(Oxford University PressMonthly Notices of the Royal Astronomical Society, 2017-01-11)In protoplanetary discs the aerodynamical friction between particles and gas induces a variety of instabilities that facilitate planet formation. Of these we examine the so-called ‘secular gravitational instability’ (SGI) ...