Clouds in brown dwarfs and giant planets

S. Metchev*, D. Apai, J. Radigan, E. Artigau, A. Heinze, C. Helling, D. Homeier, S. Littlefair, C. Morley, A. Skemer, C. Stark

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


A growing body of observational and theoretical evidence points toward the importance of clouds in the atmospheres of ultra-cool brown dwarfs and giant planets. Empirically, the presence of clouds is inferred from the red, likely dusty atmospheres of young substellar objects, and from detections of periodic variability in a fraction of brown dwarfs - as expected from rotation and a patchy cloud cover. Theoretical models have progressed alongside by including ever more comprehensive atomic and molecular opacity tables, incorporating the treatment of non-equilibrium chemistry and clouds through vertical mixing and grain size/sedimentation parameters, and employing 3-D hydrodynamical simulations. In this proceeding we summarize the key issues raised during the first gathering of observers and theorists to discuss clouds and atmospheric circulation in non-irradiated ultra-cool dwarfs and giant planets.

Original languageEnglish
Pages (from-to)40-43
Number of pages4
JournalAstronomische Nachrichten
Issue number1-2
Publication statusPublished - Feb 2013
Externally publishedYes


  • Stars: low-mass
  • Brown dwarfs
  • Stars: rotation
  • Stars: variables: general
  • Planetary systems


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