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Articles tagged: core accretion

  • core accretion, disc instability, gas giants, Swiss National Supercomputing Centre (CSCS) 28 October 2016 Temperature is the key to showing how gas giants form say researchers

    ... that one particular feature could be used to distinguish between the two theories - temperature. For the case of core accretion, the circumplanetary disk was heated to several hundreds of Kelvins whereas for the disk instability scenario, the...

    • core accretion
    • disc instability
    • gas giants
    • Swiss National Supercomputing Centre (CSCS)
  • core accretion, Jupiter, meteorites, Nature, protostellar disk 27 August 2018 Meteorites give clues as to how Jupiter was built

    ... to reach 20 Earth masses within one million years. This rapid accretion made up the major part of Jupiter’s core mass. Although it might seem impossible to build up a core of this size by sticking together billions upon billions of small pebble...

    • core accretion
    • Jupiter
    • meteorites
    • Nature
    • protostellar disk
  • Dr Kerry Hebden, Exoplanet 51 Peg B, hot Jupiter, JeanFrancois Gonzalez January 2016 How to Build Planets

    ... they are not lost to the disc through rapid migration,” explains Gonzalez. Accordingly, the long-standing core accretion timescale conflict is overcome in these simulations. An artist’s impression showing how the planet inside the disc of Beta...

    • Dr Kerry Hebden
    • Exoplanet 51 Peg B
    • hot Jupiter
    • JeanFrancois Gonzalez
    Authors: Kerry Hebden    
  • crystalline water ice, DIGIT, HD 142527, Herschel Space Observatory, protoplanetary disc 27 June 2016 Protoplanetary disc shares similarities with our own Solar System say researchers

    ...that in turn decreases the time scale for giant planet core accretion. DIGIT stands for Dust, Ice, and Gas In Time... Another possibility is the crystallisation of ice through extreme accretion events freeing enough energy to heat up and crystallise the...

    • crystalline water ice
    • DIGIT
    • HD 142527
    • Herschel Space Observatory
    • protoplanetary disc
  • calcium–aluminium-rich refractory inclusion, differentiation, meteorites, Neodymium-142, samarium 19 September 2016 New research challenges ideas on how the Earth was made

    ... widely accepted that after the Earth formed via a process known as core accretion (whereby proto-planetary bodies grow to massive sizes through the accretion of material from the proto-planetary disc), it underwent a process known as differentiation...

    • calcium–aluminium-rich refractory inclusion
    • differentiation
    • meteorites
    • Neodymium-142
    • samarium
  • gravitational microlensing, K-dwarf star, Keck Telescope, M-dwarf star, MOA-2016-BLG-227Lb 10 April 2017 Super-Jupiter mass planet found in the galactic bulge

    ... difficult and unpredictable. Finding such a massive planet orbiting a cool dwarf star is also predicted to be rare by the core accretion theory of planet formation, but as light from the event was also covered by the Wise Observatory, the...

    • gravitational microlensing
    • K-dwarf star
    • Keck Telescope
    • M-dwarf star
    • MOA-2016-BLG-227Lb

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