Spatially resolved spectroscopy in the HR 8799 planetary system


Markus Janson (1), Carolina Bergfors (2), Miwa Goto (2), Wolfgang Brandner (2), David Lafreniere (3)


(1) University of Toronto; (2) MPIA Heidelberg; (3) University of Montreal


HR 8799 is the first multi-planet system that has been directly imaged. It contains three known giant planets enclosed by an inner and outer debris belt — an architecture reminiscent of a scaled-up version of our own Solar system. We will discuss the first spatially resolved spectrum of the middle planet, HR 8799 c, acquired with VLT/NACO at 3.9-4.1 microns, where the continuum shape of the spectrum is suggestive of chemical non-equilibrium conditions in the atmosphere of the planet. We also describe our plans to characterize the other planets in the HR 8799 system, and to extend the wavelength coverage.

Attached documents

Lyot2010proc s2 talk JansonM.pdf
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