M. Janson et al. 2010 ApJ 710 L35 doi:10.1088/2041-8205/710/1/L35
SPATIALLY RESOLVED SPECTROSCOPY OF THE EXOPLANET HR 8799 c*
FREE ISSUEM. Janson1,4, C. Bergfors2, M. Goto2, W. Brandner2 and D. Lafrenière3
Show affiliationsHR 8799 is a multi-planet system detected in direct imaging, with three companions known so far. Here, we present spatially resolved Very Large Telescope/NACO 3.88-4.10 μm spectroscopy of the middle planet, HR 8799 c, which has an estimated mass of ~10 M Jup, temperature of ~1100 K, and projected separation of 38 AU. The spectrum shows some differences in the continuum from existing theoretical models, particularly longwards of 4 μm, implying that detailed cloud structure or non-equilibrium conditions may play an important role in the physics of young exoplanetary atmospheres.
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Issue 1 (2010 February 10)
Received 2009 November 2, accepted for publication 2009 December 16
Published 2010 January 20
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Spatially Resolved Spectroscopy of the Exoplanet HR 8799 c
M. Janson et al. 2010 ApJ 710 L35
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