August 14, 1992 - August 14, 2025

  • Date:16SundayJanuary 2022

    Direct Imaging of Planet Formation

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    11:00 - 12:00
    Sivan Ginzburg
    California Institute of Technology
    Department of Earth and Planetary Sciences
    AbstractShow full text abstract about The vast majority of detected planets are observed indirectl...»
    The vast majority of detected planets are observed indirectly, using their small perturbation on the light emitted by the host stars. In recent years, however, the world's largest ground based telescopes have succeeded in directly imaging the light coming from some planets themselves. I will present our comprehensive theory for the mass, luminosity, and spin of gas giant planets during their final stages of formation - when they simultaneously contract and accrete gas from a disk. I will apply this theory to the luminosity and spectrum obtained by the novel direct-imaging technique, highlighting the recently discovered PDS 70 system, where two planets were directly observed during formation for the first time.